Setup Installation :: ASUS VivoBook X200CA / Windows 8.1 Reset - Required Partition Is Missing
Jun 1, 2014
I have an ASUS VivoBook X200CA that is running a Windows 8.1 Upgrade. For about 5 months, this laptop has been running perfectly without any problems and I have managed to reset the computer many times due to certain errors and problems that have arisen from software and hardware compatibility.
Recently, I went to reset my laptop, it restarted and then it took me to the WinRE screen. I went into Troubleshooting > Advanced Options and I clicked on the Reset option. It then took me through each of the various warnings and making sure that my data was backed up and then, once I had clicked on the "Reset" button, it hung for a bit and then said "Reset has failed - Required Partition is Missing".
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Jun 1, 2014
Seen as my Windows 8.1 installation may be completely useless, I am going to booting up from BIOS. I have been putting Windows 7 (32-bit) on my USB drive and when I boot it with my laptop it shows up and says "Reboot and select proper device or insert boot media and press key". I have some important exams coming up and I need to do some revision - plus this is my only laptop!
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Jul 19, 2014
I was using Ubuntu 14.04 on my laptop before. Now I want to install Windows 8. I have laptop's rescue CD. I get the following error when I tried to install Windows 8 on UEFI using the rescue CD:
"Unable to reset your pc a required partition is missing".
I think I have a problem about partitions type because Ubuntu uses ext4.
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Apr 13, 2014
I recently purchased an Asus X551 laptop with Windows 8 but straight the way uninstalled Windows 8 and installed Ubuntu (after creating a Windows 8 recovery drive just in case). I have since decided that I want Windows 8 back as I have found that I cannot use a lot of software on Linux. The laptop did not come with any form of recovery disk or installation disk, the only reminent of Windows 8 I have is the recovery USB that I created from within the OS.
When I plug in the USB and boot from it it brings up the recovery menu with options to reset the PC but when I click it it says something like - "Unable to reset PC. A required partition is missing".
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Apr 8, 2014
My Toshiba Satellite Laptop has Windows 8. For some reason windows 8 wont load. It gets to the screen where you select which username you want. But from there its non responsive, I cant get into Windows, I cant restart to load it up in safe mode.
I got a Windows 8 disk which I had to change the bios to load it up. The cd loads but it says the automatic repair wont repair the laptop. I try to refresh windows 8 but I get a message saying the drive where windows is installed is locked. unlock the drive and try again. It also wont let me use system restore.
I try to use the reset pc option but I get a message saying unable to reset your pc, a required drive partition is missing.
At the start it gives me the option to install windows 8, I don't know whether to just do that? Is it ok to do with windows 8 already installed?
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Sep 15, 2014
I bought an Asus Vivobook S551LB. Paying around 1150 for it, the specs seemed good and I thought it'd be a fairly quick laptop.
Turns out... It's really slow, and freezes a lot.
It was preinstalled with Windows 8, then I updated to 8.1. I'm fairly new to anything past Windows 7 so, 8 I'm completely lost.
I deleted all the bloatware that came with the laptop but it still freezes, so my last resort is to reinstall windows.
I can't because I updated to Windows 8.1 and when I try to reset it says I'm missing a partition.
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Jan 24, 2014
I just bought an ASUS VivoBook S551LB laptop which comes with Windows 8. It has a 1TB harddrive and an extra 24GB SSD which is used for cache i guess. I wanted to reinstall Windows 8 because I didn't want to use the OEM version. Doing that took enough work. But after reinstalling i decided to check if the cache drive was still working. The Disk Management interface showed that the SSD was empty when previously it was completely full, so I guessed that the cache needed to be set up again.
I installed everything from my laptop's driver page and ran windows update until there were no more updates left. I looked in every ASUS and Intel application installed on the computer for options regarding the cache drive but there was nothing. The Condusiv ExpressCache program had no gui and the command line didn't work, and the Intel Rapid Storage Technology program wasn't showing most of the options which other people have.
I read lots of threads and everything seemed to point to the need for RAID. I tried the registry edits, BIOS options (and with safe boot), and looking for RAID drivers for my laptop. The BIOS only has the option for AHCI, and there are no RAID drivers that I can find for my laptop. I installed different versions of the IRST program, tried deleting the SSD volume, formatting it, etc. The fixes people talk about in other threads don't work for me because my programs, BIOS, etc seem to be missing options. Is RAID my problem?
Here are some pictures of my OS:
Installed programs:
Drives/Volumes:
ExpressCache:
Intel Rapid Storage Technology:
Just rechecked BIOS settings for the 20th time and the only SATA configuration option is AHCI, and there are no extra options in the BIOS regarding either of the Intel IRSTs
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Sep 15, 2011
I am trying to install the new develp build of Windows 8 (x86) on my asus eeepc 1005pe. This is a netbook which doesnt even have a cd/dvd drive.
So anyway, I extracted the iso on a bootable usb flash drive. I boot, and when I click install it just hangs for about 10 minutes and then it gives me this error:
I tried setting the bios from AHCI to IDE. This does not work, I even get a bluescreen of death when I boot up in the current win7 sp1 install. But anyway on google I read a lot about this problem and one of the solutions is to put it on AHCI.. but not for me as it was already on AHCI. Anyway IDE is not workin either.
Just recently I installed win7sp1 on this netbook without a problem. I checked the sha1 hashes of the Windows 8 ISO and they are confirmed, so that is not the problem either.
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Mar 17, 2014
I have an i7 ASUS Ultrabook (HDD is 2xssd in raid0, UEFI, GPT partitions.) which is great but have an issue where wifi profiles don't retain and i'm not too concerned about retaining the data on the ultrabook so after attempting to fix the wifi profiles not saving (Have been through the driver scenario, folder permissions, sfc, etc and no joy) i'm just going to do a clean install from the recovery partition.
I started by trying the recovery methods 8 has built in, refresh the files, but fails without an error and makes no changes. Attempted to do a full restore via 8 recovery also but fails with no error also and then I realized I was actually missing the OEM options (F9 during boot doesn't allow for EMS boot to begin recovery from recovery partition like expected, just boots into normal recovery).
After installing windows 8.1 it no longer allows me to do an OEM recovery via Windows 8.1's built in recovery methods so I created a recovery USB from the recovery partition using the windows 8 tool since the AI Recovery Burner doesn't recognize the partition, the USB recovery creation did recognize the partition and allow me to create the USB recovery drive from this successfully.
When running the USB recovery, the recovery fails with "Required drive partition is missing"
I think this is because the recovery partition is actually a windows 8 partition, not 8.1, and will not work.
Seems like a lot of effort but I want to retain the OEM key and software set (because it's surprisingly not a piece of trash) so was thinking if I install windows 8 (I have an ISO and another key) over the existing 8.1 partition it may actually allow me to then do the normal recovery.
Since the recovery drive did not work I decided to clone the recovery partition and have the WIM file now, although since cloning the partition when running recovery I no longer have the option to create a recovery drive using the recovery partition, the partitions no longer show as recovery partitions in disk management but instead as OEM partitions (Not sure why this changed.)
The recovery xml configuration for REAGENTC does have the correct GUID's and offsets for the partitions although when running this in elevated cmd it results in error 3 unable to run.
Am I able to create a base recovery drive from another windows 8.1 pc and use the WIM file?
Any way to tell what partition table my created recovery drive is expecting so I can adjust the current partitions to match and perform the recovery? When I try to refresh the files from this recovery I get the error "Windows system is locked" which is why I went for the full recovery.
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Sep 15, 2014
Recently my computer has been encountering problems involving speed and whatnot, and I have found no method of fixing them. I have been looking to reset my PC, and went to do so through the built-in tool that is supplied on my ASUS laptop, by pressing F9 at startup. I chose to reset my PC, but it returned an error saying the recovery partition couldn't be found. So I went to do so through the PC settings, and it rebooted my computer and told me the reset failed. I checked and found the recovery partition using MiniTool Partition Wizard, so it still exists.
Apparently this is an error other ASUS users have found after updating to Windows 8.1. I don't know how to solve this problem, and figured I may as well reinstall a fresh copy of Windows 8 without all the ASUS bloatware and garbage. So I hunted for a Windows 8 ISO file, and failed. I've tried multiple methods. One involving using a product key to download Windows 8 to an ISO file through Microsoft's Windows 8 Setup, and that failed because the product key was OEM BIOS-based, and not retail.
I can either try and do a factory reset by somehow fixing the recovery partition through some miracle, or;With extreme luck find a Windows 8 Core ISO setup, and install that and refind the drivers for my PC.
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May 14, 2014
I have an Asus gaming laptop that I got off of Craigslist awhile back. It did not come with any factory disks. I'm trying to do a factory reset and it says "Some files are missing. Your Windows installation or recovery media will provide these files." But I don't have any recovery media.
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Aug 6, 2014
I have some problems with my laptop ASUS K55VD. I had windows 8, but with the store of windows I have updated to windows 8.1.
I have tried to use the recovery partition, but every time I try appears a message. Failed to reset your computer. A partition of unity necessary is missing.
For that reason I have looking for some information, and with CMD commands like "diskpart". I have noticed that I have 8 volumen.
And in Computer Management appears this.
Then googling recommend to use EaseUS Partition, and some many things change. In the beginning, I had the same 3 partions in red and I don't know what happened.
But in diskpart change too, and I only have 4 volume, and it have dissapeared the recovery partition, and I don't know why?
Before to use EaseUS partition I have created a USB booteable with 9.79gb, and I had this:
But, in this days I have tried to create the USB booteable again, but I can't. And everytime I have tried to run the usb, appears to select the language, the keyboard, and then appears the same windows with troubleshoting and turn off (it returns at the previous windows in blue)
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Feb 8, 2013
I upgraded the O/S to Windows 8 Pro from Standard in order to use the WMC and now the Sleep mode doesn't behave as before. How to reset it back to the factory settings? The Windows 8 RESET function under the Control panel returns it back to a fresh copy of Windows 8 Pro and not Windows 8 Standard. I also see a recovery partition on its Hard Drive.
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May 23, 2014
I've just received an Asus S301L laptop, with Windows 8 Pro preinstalled. The owner wants Windows 8 wiped and Win7 installed along with Scientific Linux.
I've disabled secure boot and enabled CSM in the BIOS, thus getting rid of the annoying UEFI boot process, and I'm now able to boot old-style from thumbdrives and whatnot.
My question is: given this partition configuration as shown by gparted, is it safe to wipe the whole damn thing and repartition from scratch, or will I run into bootup problems with the BIOS not seeing stuff where it wants to see it (like that suspicious FAT32 partition labeled "boot")?
I imagine this isn't a problem since I disabled everything UEFI, but better safe.
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Mar 7, 2013
I swapped the HDD with a new blank SSD in T530 and booted it with the recovery USB of windows 8. System boots from the USB and gives refresh, reset, and other options. However, when I select reset ( to fresh isntall the OS on the SSD), it fails saying a required partition is missing. What! I'm using a blank SSD, shouldn't the installer present me with options to format and use the drive rather than erring out?
Is there any better way of installing the windows 8 os on a new blank SSD using the recovery USB?
I do have gParted live USB. If nothing works, I will partition the SSD using gParted and try the Windows 8 recovery USB again.
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Feb 21, 2014
I was playing around with my OS dual booting them from Windows 8, W7 and XP but I accidentally erased my recovery partition. The bios i have is different from anything I've seen before. To boot from a cd/dvd i had to enable launch csm and secure boot control. Its the asus Q500a laptop. I just wanna know if i can download the recovery partition from somewhere and put it in my hdd.
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Mar 24, 2013
I am trying to run a reset in Windows 8. However, after rebooting into WinRE, it says that it can't reset because I am missing a required partition.
I searched for a solution to this problem. But, it looks like most people who see this error have accidentally deleted some Windows partitions. In my case, I have not altered the Windows partitions since original install.
I read another comment that suggested that it's due to the hd driver being missing and that I would have to "inject" the correct driver into winre. But, I'm not sure how to do that (or if that is really the fix).
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Jan 17, 2014
Alright, so my ASUS laptop has been getting a little slow lately, so I decided to reinstall. Now I know my PC has an ASUS recovery partition, which reinstall the pc with all the tools, drivers etc, since I've used it before. But now when I restart the computer and press F9 and reset, it doesn't work. This is what I do:
This is where it was supposed to give me the option to restore whole drive or just install windows to the primary partition. But now it asks for a CD, which I don't have. This PC never used to have a recovery CD, just a recovery partition.
Then, I read somewhere I could do the same from inside Windows 8, so I tried that as well by going to the charms bar, then Settings and then "Change PC settings". Then I selected "Update and recovery" from the left, and then went to Recovery, where I pressed the button to remove everything and reinstall windows. This is what I got:
So, I tried to see if EaseUs Partition manager showed the recovery partition. I started ASUS and these are the partitions it found:
I saw it found both a "Recovery" partition and a "Restore" partition. Now I assume the Recovery partition is the one Windows 8 boots into, and the Restore partition is the one created by ASUS. So, these are the contents of the Recovery partition:
And these are the contents of the Restore partition:
As you can see outlined in red, it does contain an install.wim file, so I know the recovery data is there. However the Windows 8 recovery environment just isn't able to find it.
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Nov 30, 2013
While I was messing around with my laptop, I decided to add on a fourth operating system, Arch Linux. I suppose I was pushing my luck a bit . Anyways, during the installation, I accidentally deleted the EFI system partition from my laptop, which contained the Windows Boot Manager and necessary files to boot. Great. I only made things worse by trying to troubleshoot, and broke grub as well.
I have a Windows 8 repair disk I made using the Windows 8 built in utility, but it does not boot: the computer turns on, and just hangs at the Toshiba splash screen.
I also can obviously not access the Toshiba recovery partitions, as they are booted into just like Windows itself.
I found a bootx64.efi file on one of my system's recovery partitions (Toshiba seems to have some really complex system going on) and placed it in EFIootootx64.efi. According to this site, FGA: The EFI boot process., I need to place the bkpbootmgfw.efi (on my system, that was what it was called, but I suspect boot-repair (ubuntu tool) messed something up when I was first setting up grub and the ESP and the bkp stands for backup) back onto the EFI System Partition.
Where to look for in the various Windows Imaging Format .wim and .swm files I have laying around my recovery partition(s) in order to extract the necessary EFI files. Any Windows Repair iso that works.
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Sep 15, 2013
The laptop is an ASUS Vivobook, running Windows 8. Once I woke up it from sleep, and the screen was blank. The backlight was on, but the screen was black. So I held the power button, and then started it up again.
When it got past the BIOS screen, it then said "Configuring Windows Updates". It then got stuck at ~50%, rebooted, and then gave a black screen again.
After a force shut-down, it resumed the "Configuring Windows Updates", this time from 60%, and booted normally. Is this normal, or should I ask for a replacement?
i54 GB RAM750 GB HDD + 24 GB SSD HYBRID2GB NVIDIA GEFORCE
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Jul 26, 2014
ASUS VivoBook S551LN bluescree new, I get a blue screen error with Power_Driver_state_failure
Memory.Dmp [URL] .....
Happens after loading certain applications. Assuming theres a compata problem with a few of the things.
Ive updated all the drivers i could find. Also I uninstalled Deamon Tools
It does not happen instantly. The problem of BSOD occurs about 3/4 Mins after the application is opened
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Aug 27, 2012
I just downloaded windows 8 prof from my msdn, and I made a bootable usb stick with WintoFlash and now when I am trying to install I get this message: Windows cannot open the required file D:/Sources/install.wim. The file may be corrupt or missing. Make sure all files required for installation are available, Error code: 0x80070570. I have looked into the usb stick but install.wim is just there. And I did a disk chek in wintoflash and it found this:
Found problems with source files.
Can't find file D:sourcesoot.wim
Can't find file D:sourcesidwbinfo.txt
Can't find file D:ootmgr
Can't find folder D:oot
Can't find file D:sourcesinstall.wim or file D:sourcesinstall.swm
Total errors: 5
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Dec 27, 2012
I bought a new SSD and want to do a clean install on it, however am having problems during the install process and receive the following message:
Windows 8 cannot install required files. Make sure all files required for installation are available, and restart the installation. Error code: 0x8007025d
The install images was downloaded from the Microsoft website and I have tried using a USB thumb drive and DVD install disc and both receive the same error. I have used the DVD disc when I originally installed Windows 8 Pro on the same desktop but on an IDE harddrive and believe the disc should still work (i.e. no scratches on it).
Here's how I prepared to install:
1. Unplugged all harddrives except for brand new SSD (Crucial M4 128 GB SSD)
2. Changed bios settings to AHCI (before was on IDE) (using Asus P5k-V motherboard)
I'm not sure what's going on if the harddrive is corrupt, the bios settings need to be tweaked, the drive is incompatible with my motherboard or something else.
I don't want to go back to using the IDE drive to boot windows but rather use the new SSD.
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May 12, 2014
One of our software providers has instructed us to make some changes to our Win 8 PC's registry to get the software to work properly. They have sent me details of what changes are required:
Open Windows Registry Editor (Regedit)
Right click HKEY_CLASSES_ROOT - click PERMISSIONS - click ADVANCED
Click/Check: REPLACE ALL CHILD OBJECT PERMISSION ENTRIES WITH INHERITABLE PERMISSION ENTRIES FROM THIS OBJECT
Double click the entries: USERS, CREATOR and ALL APPLICATION PACKAGES
For each entry:
TYPE: Select Allow Applies to: Select This key and subkeys
Click/Check: Full control and Read
Click OK on Entry detail screen
Click OK on Entries list screen
I know very little about Windows Registry other than not to touch it. These changes seem quite extreme.
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Apr 14, 2013
I have an Asus UX31A with WIndows 8 Enterprise VL. Every time I wake the system from sleep, I hear the system chime as if a device is attached, unattached, and re-attached. I don't know what as it happens at the login screen and I'm not fast enough to see if anything appears in the taskbar.
After logging in, I get this window (see below; I had to remove a couple things I don't know if I can show). If I follow its directions, I restart and go about life until I put the system to sleep again in which the process repeats. As I write this I'm finishing a bunch of updates so perhaps that has something to do with it (I have a lot of Office and SP1 for SQL Server that I've been putting off along with a healthy swath of optional OS updates).
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Aug 17, 2014
I am running Windows 8 on an Asus laptop. Two days ago it was doing updates and restarting. It did this 3 times, and on the third restart I received the blue error screen. It stated
"Recovery. Your pc needs to be repaired. A required device isn't connected or can't be accessed. Error code: 0xc0000225
You'll need to use the recovery tools on your installation media. If you don't have any installation media [like a disc or usb device] contact your system administrator or Pc manufacturer."
It gives me three options at the bottom [press enter to try again, press f8 for startup settings, press esc for uefi firmware settings]. If I press enter I get the same screen just with a bit more text. f8 does nothing. Uefi takes me to the boot menu. I have been trying to boot from a dvd r with a flash operating system in order to recover my data before it is reformatted. However, it does not seem to recognize the disc. When I select to boot from dvd rom, it tries, then on the black screen appears text saying restart and select boot device or install boot media and press a key. I tried taking disc out and putting bavk in, then pressing a key, nothing, same message.
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Mar 12, 2014
I've got a windows 8 laptop which gives me this error message when i try to switch it on:
"Your PC needs to be repaired The boot configuration data file is missing some required information.
File:BCD Error Code : 0xc000000d ............................" I'm sure you are all familiar with the rest of this dreaded error code.
I've tried all the repair options, recovery disks to a windows 8 bootable flash disk, the command prompt fix boot commands as well but still I get the same error message whenever i try to boot windows.
Now I'd like to know, can't i just copy the boot folders from another similar windows 8 pc and paste them into my harddrive to fix this?
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Dec 29, 2013
I built my own PC last year and I've done several OS upgrades in that time frame. First I started with windows 7 basic which I then promptly upgraded to 7 ultimate because my university offered upgrades for $7. I then upgraded to 8 when it first came out and then 8.1 too. I put a new SSD in my PC and copied all my 8.1 data on to it I then turned the old SSD in to a second boot drive for OS X. I'm having problems with 8.1. I wanted to create a repair drive to hopefully root out and fix whatever is causing windows explorer to crash. It's not a virus I've made sure of that. I have a feeling whatever caused this happened when I upgraded to 8.1 and then copied over the SSD. What my product key is for 8.1 pro i just found the email microsoft sent me with my windows 8 key but i have no disc.
when i followed the instructions to make a recovery drive it told me that some of the required files are missing and to use a windows installation disc or media which is a problem because all my windows 8 upgrades have been done online.
also my PC currently doesn't have a disc drive i removed it because i only ever used it to install windows 7 basic.
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Aug 21, 2013
I am running two 7950s in crossfire on my computer. Anytime I launch a game, my computer just locks up and this hardcore buzzing sound playing right when it crashes, the sound continues while the computer is frozen.
This problem has happened in both Battlefield 3 and Splinter Cell Blacklist. I have enabled Crossfire and Crossfire for applications that have no associated profile. In GPUz, it says my cards are enabled for crossfire.
I'm wondering if it's my psu? If I disable crossfire, the games work, but the second gpu is at 0% utilization.
Here are my specs:
Windows 8 64bit
AMD 13.8 beta 2 drivers
ULPS is disabled via MSI Afterburner (and I did restart after)
CPU: 4670k
Motherboard: Gigabyte Z87x-UD5H
RAM: 16GB Gskill
HDD: OS on a 120gb ssd, games on a 2tb WD Black
PSU: 750w Corsair
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Jan 30, 2013
I have win 8 pro installed & two HDDs with two partions each , I want to migrate the boot partition to another partition on the second drive .
It would have been easier if i would have just cloned the complete drives but one of the partions on the 2nd drive has data which cannot be deleted .
So I have Drive
1 - Partitions C: ( boot partition ) & D:
Drive 2 - Partitions E: & F:
I want to remove Drive 1 from my PC so i want to copy C: to E: then remove drive 1 & boot from E:
I tried "Easeus todo backup" , did not work, it does not make the copy bootable , to make it bootale the whole drive has to be copied .
I tried making an image of C: using Windows 8 inbuilt backup feature then removed drive 1 , installed Windows 8 on E: then tried restoring the image of C: but i got some error.
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Jan 19, 2014
So I installed Windows 8 whenever it came out and then updated to 8.1 last fall. Since then my computer has become bogged down and running really bad. It's time just start fresh but when I go in to the PC settings to restore it, it says I don't have the necessary files and that I need to insert a disc. Since I installed 8.1 from the store I have no disc to restore it from.
I saw some tutorials on activating 8.1 from 8 but I don't even know if I'm following the right ones or not. This was much easier to do in Windows 7. But anyways, how I can restore my computer.
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