Choosing Operating System In Boot Up Process
Nov 4, 2012
When I boot up my Win 7 Pro x64 computer I have to choose either Windows 7 Pro or Windows 7 Pro. One works but the other cannot startup so how do I remove it. I've searched on the internet but they all seem to be for WinXP and require me to choose edit but there is no edit button available.
System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i7 CPU 930 @ 2.80GHz, Intel64 Family 6 Model 26 Stepping 5
Processor Count: 8
RAM: 12286 Mb
Graphics Card: ATI Radeon HD 5800 Series, 1024 Mb
Hard Drives: C: Total - 953866 MB, Free - 911718 MB; D: Total - 152627 MB, Free - 133648 MB; E: Total - 953765 MB, Free - 888220 MB; H: Total - 953866 MB, Free - 935786 MB;
Motherboard: Gigabyte Technology Co., Ltd., X58A-UD7
Antivirus: Microsoft Security Essentials, Disabled
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Jun 4, 2012
What is the difference between a process and a program in any operating system. What is it that a processor handles; is it a process or a program.
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Feb 1, 2013
Ok, so in the process of overclocking, I rebooted my computer and then got the "Missing operating system" error. I reset the CMOS and that didn't work, in the process of trying to boot from my Windows 7 disk/Linux distro's so I can see if one of my drives crashed but nothing seems to want to boot, so I am at a loss. Also, it seems in the BIOS, some of my SATA devices aren't being recognized. That may be because I reset the CMOS but I'm not positive. I can only see one of my SSD's in the BIOS and one of my optical drives.
Specs:
i5 2500k
MSI Z77-GD55
XFX DD 6870
12GB of G.Skill Ripjaws red/blue (2 x 4GB) & (2 x 2GB)
Corsair Force 3 60GB boot drive (Raid 5 with OCZA3 60GB)
OCZ Agility 3 60GB boot drive (RAID 5 with CF3 60GB)
WD 1TB Caviar Black storage
Corsair TX850M
Corsair H70
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Oct 19, 2011
Suddenly my Win 7 Home Premium x64 will not boot. The system starts, POSTs then loads the DVD driver, then the screen goes black (not blank but "lit up" black if that makes sense). Then nothing. If I use Hiren's boot cd I can boot up using the "boot from HDD" option fine and Windows operates normally. System restore to a previous configuration made no difference to the original problem. I cannot boot into Safe Mode. F8 just offers me boot order options.
- Running the Windows 7 DVD I find: "No operating system is listed on the Repair Windows option."
- Running Startup Repair finds the following error: "the partition table does not have a valid system partition" which it claims to have repaired, but the error remains and Windows will still not boot.
I followed this advice:
Boot 7 dvd to system recovery options command prompt. Type: Diskpart
list vol (find the vol letter e.g C or partition number e.g. 1 for the system partition )
Sel vol C ( or sel vol 1, obviously use the correct letter or number)
act exi
My system partition was easily identified and listed as healthy so I selected it and made it active. The problem still remains exactly the same. My system is self built just over a year ago, to my knowledge has been running fine, without any hardware issues. I'm prepared to do a clean install if that's what it takes but if there is a way to fix the partition problem without that I'd like to explore it first.
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Feb 4, 2012
I recently bought a vaio VPCX113KG off ebay. After a month of use the pc wont boot. it comes up as "operating system not found" but the laptop doesn't have an optical drive and I can find downloadable recovery media. What should I do? I think the hard disk is being detected in the bios.
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Nov 12, 2012
I just shipped my computer out of the UK. One of the HHDs my OS was RAID 0ed to broke. Obviously I got a missing operating system error from that. So then I deleted the RAID volume and changed my boot 1st priority to my DVD drive so i could reinstall Windows on the hdd that's still alive at least.
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Sep 16, 2011
Message won't boot - boot with Win7 DVD - go to repair - no operating system shown - do repair - reboot - same result
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Oct 14, 2011
I've been using my new desktop for the last couple of months. Didn't have any problems until all of a sudden my computer just completely shut down and restarted while I was using it. And now it cannot boot, it just comes up with a 'Missing Operating System' message! I went into BIOS and it still detects my hard drive.
I booted from my Windows 7 CD and it looks like its going to load from my CD, and then it just stalls and comes up with the same message.. 'Missing Operating System'
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Jul 11, 2011
So the other day I wake up to log on to my Alienware M17x m1, which was running windows 7 ultimate x64 sp1. As it's booting up, I see the message operating system missing. So I grab my USB thumb drive (my cd/DVD drive does not work, thus I have to use windows 7 on USB). Tried to reinstall windows that way, but was getting some partition error of some sort. Now when I try to boot up with USB, I can't even get to the windows 7 installation screen. I get - The Windows Boot Configuration Data file does not contain a valid OS entry.
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May 25, 2011
I have my hard drive partitioned to boot Windows 7 and Kubuntu 10.04. The default operating system is set to Kubuntu but I would like to change this to Windows 7.
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Aug 15, 2011
my computer crashed last night and when I have tried to switch it on since it gives me the above message.I have tried entering setup by pressing F2 and changing the hard disk to be the primary boot device, but the same thing occurs.I have created a Windows 7 32-Bit recovery disk by downloading the iso file on my dad's pc and burning that to a dvd. I am able to load this, but when it first starts up it has a table supposed to list operating systems but it is blank and I cannor select anything. It says if my operating system isn't listed, "click load drivers and install drivers for your hard disks" but I don't know where on earth these are located and neither does google seem to.then working through the option on the menu:
-if I click start-up repair it tells me "startup repair cannot repair this computer automatically"
-if I click system restore I get an error message saying I must specify which windows installation to restore
-if I click system image recover it gives me an error message saying "windows cannot find a system image on this computer" and if I try to select one none appear.
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Sep 3, 2012
I made the mistake of putting W7 on a small partition of the 160GB D drive. I was not aware that much of windows 7 programing would not allow me to change the destination to install and insists on installing on the OS drive. I am looking for a way to copy, move or coerce all of the current system onto another drive without erasing that drive.
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Sep 16, 2011
Message won't boot - boot with Win7 DVD - go to repair - no operating system shown - do repair - reboot - same result.
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Oct 31, 2011
i tried all functional keys boot setup but it didn'nt work
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May 3, 2011
i have windows 7 ultimate before and it goes to slow and i decided to reformat my pc,Now I use home premium. Every time I boot there a list that I have to choose.When I choose the other windows 7, I'm shocked that I still have windows 7 ultimate.I think it serves as the dual boot..I mean dual os.. I can run home premium, and also i can run ultimate.. Now I want to get rid of windows 7 ultimate, which is my first os... I know how to delete, but I'm not sure if it will give any problems...I type msconfig I see the boot list try to delete since
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Jun 19, 2012
It all started when I realized I downloaded the 32 bit operating system on my desktop. Now however, I got a BSOD when I inserted the CD into the desktop. People around the internet said that you must go ahead and format the drive, So, I went ahead and did that. Thus deleting the operating system in the process. Now, When I try downloading the operating system, I get this message:Boot MGR is missing. restart the computer.I have tried everything. Using my laptop to make a USB Drive to boot it up. I cannot do that because my laptop is a 32 bit operating system, and I want a 64 bit.Please, The motherboard is a M5A 78L-M LX Plus with an AMD chipset. The monitors work fine and everything works until the boot MGR Pops up. I am puzzled because while working on computers in school, this only popped up when the operating system was on the harddrive. However, I cannot do anything at all.
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Mar 14, 2012
The first problem was that it kept booting into the windows startup repair. For a split second i can see windows 7 loading but then it automatically went to the startup repair , after many many reboots i opened the command prompt in windows startup repair and tried fixing the master reboot.Now it gets stuck at loading operating system.Even when i try to boot from the windows 7 CD and Truecrypt rescue disk it still gets stuck at loading operating system.The whole harddrive was encrypted with truecrypt and it use to go to truecrypt bootloader after loading the operating system but it doesn't do that anymore.
Specs :
mobo : Gigabyte GA-890FXA-UD5
cpu: phenom ii x6 1090t
gpu : radeon hd 6950
hard drive : western digital black caviar 1TB
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Jan 29, 2013
I am attempting to reinstall windows with files burned from an .iso onto a blank disc but when I press f12 then go into CD-ROM it goes to the next screen and says: 'Loading Operating System... Boot from CD/DVD..' Then it will boot normally.
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Oct 26, 2009
I am choosing which OS to boot by changing the boot order in my BIOS. To me, this seems clean and simple. I built 32 bit XP on one disk, then removed that disk from my system, installed a different disk, and built 64 bit Windows 7.
When both disks are installed, I change the boot order to select the OS I want, and each OS sees and can use the files on either disk.
Am I asking for trouble here, or is this as clean as I think it is? What I want is one set of user document files which can be used from whichever OS has been booted.
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Feb 23, 2012
Last night, I built my first desktop machine. Most of my components were brand new, but I kept my old hard drive.(Which contained my Windows Home Premium 64 bit OS on it.)
When I finally went to power it up for the first time, it booted up normally, and then when it goes to the black screen with the colors swirling together to make the windows logo, right away it quickly flashed to a blue screen and then restarted.
I then went into the repair windows mode, but the automatic repairs failed. They left me with these details:
Problem Signature 01: 6.1.7600.16385
Problem Signature 02: 6.1.7600.16385
Problem Signature 03: unknown
Problem Signature 04: 21200924
Problem Signature 05: Autofailover
Problem Signature 06: 3
Problem Signature 07: No Root Cause
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1033
The hard drive with the operating sytem was working fine for me yesterday in my old machine. So I am assuming it has to be a problem with the new hardware, or I failed to connect something, or i need to change a setting.
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Sep 3, 2011
It says ''Missing operating system'' on boot up windows 7 after trying to turn it off manually (which means the turn on button)
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Dec 27, 2012
Ran F12 to regain Operating system - long version. Says computer passes everything but there's no operating system found. Did this Twice. Tried "Operating System" CD that came w/ Studio 17 laptop. Hit option to run via CD & never got anywhere after an hour. Tried Reinstall Hardware disk that came w/ laptop. It shows Vista, but laptop came w/ Windows 7. See where it shows the system's checking things out, but never get anywhere.
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Jun 12, 2009
How to Change the Default Operating System to Start in Windows 7 ?
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Mar 19, 2012
I have an HP Pavilion zd7000 laptop. Am trying to boot from the original XP CD that was provided by HP.(I have the product key info)I put the CD in the drive, shutdown the laptop, power it back up and I'm looking at the same screen I always get when I bring this system up. I don't see anything in the way of a minimal Xp system thats prompting me to install.
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Feb 18, 2012
"Missing operating system" massage is coming when i start my system and i am not able to start. I think because , i had given "mark partition as active" option for one hard dive (E) in disk management when last time i opened. it did not have any data. i did not know, this will make any problem. Now i am not able to boot windows re installation dvd also. i can only take BIOS settings.
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Feb 17, 2012
"Missing operating system" massage is coming when i start my system. I think because, i had given "mark partition as active" option for one hard dive (E) in disk management when last time i opened. it did not have any data. i did not know, this will make any problem. Now i am not able to boot windows re installation dvd also. i can only take BIOS settings.
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Jun 14, 2012
I am looking to upgrade my desktop from an xp to 7. System builders are very cheap which concerns me. What is the difference from a system builder and the regular version.
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Nov 22, 2012
whenever i boot my pc i starts making sounds for like 15 secs and later asks me t choose my operating. this started wheni removed my battery for like 3 weeks and then inserted it back. am using acer mini.
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Oct 30, 2011
Dont know why but System idle process is randomly using so much CPU ! Anyone know what mabye the problem that causes so much CPU usage .
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Mar 12, 2010
i was given a very nice computer recently and to be honest, i'm kind of nitpicking, but this is irritating me nonetheless. specs are as follows:Mobo: Asus L1N64-SLI WSProcessors : (2) AMD Athlon 64 FX 72's running at 2800 MHzRAM: (3) 2GB of PC...something-or-other speed lol sorry cant rememberVideo: (2) NVIDIA GeForce 8800 GTS'sOS: Win7 Pro 64-biti got it with no HDDs so i formatted 2 drives i had and did a fresh install of 7. that was... less than a week ago. anyway, here's the thing: there is a constant usage of 25% of the processors at all times by the 'System' process. and whats even more confusing is that most of the time processor 1, core 2 is the only core doing it. just pegged at 100% while every other core is more or less idle... BUT some of the time it's evenly divided up between all 4 cores.
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Sep 27, 2011
System restore process is "stuck"
OS: Windows 7 Home Premium x64
PC: SONY VAIO EL series
I am using the proprietary restore software to (try) to reload the OS back to factory condition. I have tried several times to fix it, each time with no success. I have already written zeros to every sector of the HDD, so I'm trying to start from scratch. The restore disk/process takes place over three disks I had to create as soon as I got the laptop. The first disk went through fine, and now the second disk is in, with the percentage stuck up at 24%. It got there fairly quickly, but it's been stuck like this for at least an hour now. I'm tempted to wipe the disk again, but I'm hesitating because the HDD light is on and I can hear the DVD drive doing something, though I'm not sure what.
The loading bar/progress bar isn't budging, but the green background of it is changing color (like it does when something is going on.) It is sending me no error messages, and I'm just wondering if I should let it keep going or do it some other way. When I insert the first disk, there are two options to boot from, either the "VAIO care rescue," which is what I'm doing now (I selected the restore option in its menu) or you can choose "Windows 7 install" or something along those lines, I tried that but there didn't appear to be any option to actually install under there, since it didn't detect any "images" on any drives. Regardless, I need to get this thing up and running.
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