Cannot Boot Windows 7 (Black Screen / BootBCD Error)
Jul 5, 2012
I was having problems booting Windows 7, so I attempted to use the Bootrec.exe tool to rebuild the my BCD. But I screwed that up big time.Now I get the following error message on a black screen when I attempt to boot up: Windows Failed to start. A recent hardware change or software change might be the cause. To fix the problem:
1. Insert your Windows installation disc and restart your computer.
2. Choose your language settings, then click "Next."
3. Click "Repair your computer."
If you do not have this disc, contact your system administrator or computer manufacturer for assistance.The Windows Boot Configuration Data file does not contain a valid OS entry.As far as I can tell, the hard drive is operational. The BIOS detected it and it passed the diagnostics test.
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Dec 27, 2011
month old Toshiba laptop.On boot got file BootBCD, an error occurred while attempting to read boot configuration data.computer came with no restore disk.son has been in hospital so it wasn't used recently.odd thing,wasn't able to access safe mode.downloaded Windows 7 disc hoping to repair but wasn't able to do anything with disc.wondering if it's hard drive related
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May 2, 2010
I am running Windows 7 64 bit Ultimate on two PCs on my home network. I went to use one yesterday and was presented with a black screen. I rebooted the PC hoping that would solve my issue and was presented with the following error message while trying to reboot:
Windows failed to start. A recent hardware or software change might be the cause.
File: BOOTBCD
Status: 0xc000000d
Info: An error occurred while attempting to read the boot configuration data
I checked my other PC and saw that it had been updated with several Windows patches yesterday. I'm guessing that the broken PC had an issue installing or rebooting from one of the patches. I ran the repair utility on the windows 7 dvd as instructed by the error message. It was unable to find a previous installation of windows with an error box saying: The file or directory C:BootBCD is corrupt and unreadable please run Chkdsk utility.
I tried the auto repair anyway, which appears to be working until the end when it gives me the "The file or directory C:BootBCD is corrupt and unreadable please run Chkdsk utility" error again. Then it says it can't save the fixes and says it can't be repaired. When I check the details it says I need to "repair offline" and that it cannot find an OS installed.
In my searches for an answer, I read about rebuilding the BCD through the command prompt. I ran the following commands:
BOOTREC /FIXMBR - said it was successful
BOOTREC /FIXBOOT - said it was successful
BOOTREC /REBUILDBCD - failed saying The file or directory C:BootBCD is corrupt and unreadable please run Chkdsk utility
I ran chkdsk and got no errors. I only have one hard drive, but when I go to a command prompt (from the repair section on the Windows 7 Install disk) it defaults to D:. I checked C: and it appears to be making the reserved system space drive C:, which would explain why I can't find a windows install on it. Worst case, If I just go down the path of re-installing windows without formatting the drive, will it pickup my old settings?
Here is what system info I could get (from the BIOS startup diagnostics):
Main Processor: AMD Athalon 64x2 Dual Core Processor 3800+
Memory Testing: 2030592K +64M shared memory
Memory Information: DDR2 533 Dual Channel, 128 bit
CPU L2 cache size: 512K x 2
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Jul 13, 2011
advent roma 3000 is not starting, when I turn it on, only black screen and the sound of movement, which comes on and off.
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Sep 6, 2011
When doing a regular log on where the desktop should be located at i only see a black screen.I can log on in safe mode w/ networking and i can get to the desktop and icons located on the desktop that way.I have not installed any programs in the past 2 month on the computer.The web sites thatPenn State Industries | Pen Turning | Pen Kits | Dust Colland Shipping, Freight, Logistics and Supply Chain Management from UPS this is the total.None of the NO NO web sites cause you get viruses and other bugs.If i do not know who a e-mail is from it does not get opened mark it as spam & delete it
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Nov 1, 2012
windows 7 on my laptop (toshiba sat.) will not boot it goes to the [COLOR=blue !important][COLOR=blue !important]toshiba[/COLOR][/COLOR] screen then black with cursor in top left. i cannot go to safe mode or startup repair because when you hold F8 or any other key it just beeps. im trying to keep from trying the factory reset.
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Sep 15, 2011
I have a major problem with windows 7 home premium which was an upgrade over vista. A while back I started having problems when I ran windows update. Almost every time it ran and I rebooted later all I got was a black screen with the mouse curser. When I rebooted a second time I got my desktop but none of my programs would load. I would get the spiral and then it stopped. The hard drive was chugging away. I usually got around this by going back 2 or 3 systems restores and then it worked fine. I recently used revo uninstaller to get rid of a program and to clean up the registry. It created a system restore and then I rebooted. When I rebooted I got a message of some disk problems and ran 3 corrective actions (I don't know what they do) including chkdsk and then rebooted. I got my desktop again but nothing loaded.
I did safe bootup to get to the system restore but they had all disappeared. Apparently either the disk or registry got corrupted. I can go on the internet in safe mode or load programs but can't print. I would love to be able solve the problem why programs can't load so I wouldn't be dependent on systems restore and get my laptop running normally. It is a Dell inspiron with intel core 2 duo
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Jan 17, 2013
It worked Ok. Originally installed with Home Premium disk. Upgraded to Pro version online--no disk. It worked until I changed the secondary drive to an old one to get data from it. Only get black screen. Even put the original secondary drive back in. Still no go.
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Jun 5, 2012
i bought a external hard drive and really wanted to have windows on it, so i installed windows 7 with some program, ok the problem is when i start the windows just dont boot, just appears a black screen with a blicking cursor, i think it is because mbr or boot are damaged because i removed ubunto and grub recently and i fixed it with partition wizard, i eard too i can repair this with windows re but it dont work on external hard drives
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Jun 26, 2012
When Win 7 pro (32 bits) boots up, as we all notice, there is a second or so when there is a black screen, w/ just your mouse cursor, and then you are supposed to see the blue Welcome screen.
In the past 2 months, my computer is stuck at that black screen about 7 times, as recent as tonight. I've done a clean install w/ the latest Nvidia driver 2 weeks ago. No change. It looks like win 7 Pro is stuck there and waiting for something as my hard drive light blink on and off.
So, I would do nothing, or sometimes I would disconnect the HDMI port connects to my 3rd PC Panel (see below), and I would wait for 5 min. or so. Then my login logo shows up, I click it, and I got to windows.
Now, w/ the normal boot up, I don't have that login logo, win 7 pro will simply boot up directly to win 7 main screen after I turn on the computer.
Some1 said this could be IRQ sensing problem of the video card. But so far, I have no proof on that 1 way or the other: All these started about 2 months ago, at or near the same time when the Sharp LED TV technician came to my house and upgraded all the firmware, including the firmware that consumers can't download, to my Sharp LED LCD TV, as the power button wasn't working.
Then in the past 2 mth., every time I turned on my LCD TV, which is connected to my computer as the 3rd screen via a DVI to HDMI cable, Win 7 senses this 3rd panel, and the screen went black and back on again. This isn't the way it used to be: as it WAS NOT SWITCH TO THE HDMI PC PORT.
My Sharp LCD has 4 HDMI output. Tonight for e.g., I was on Input 2, which is satellite, but as soon as I turn on the Sharp LCD, win 7 senses this 3rd screen, and the screen do that black screen then back on again w/ the music charm note.
This was not the way it used to be, in the past yr., w/ this same set up, win 7 only went to the black screen and back on when I switch to Input 1, which is PC at 1920x1080. And I don't know if the above is related to the boot up lock up or not.
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Aug 2, 2012
I just finished a new built and I ran into a problem after installing Windows 7. I was setting up some some drivers the PC randomly went to a black pixelated screen and it sounds like the CPU fan started running on max speed. Now, every time I turn it on the fan is still running on max speed and the screen goes black soon after the desktop starts up. I know it could be a hundred things but it be huge if you guys have any information on this issue. One last thing is I switched the main graphics card back to the integrated one and it seems to be running okay but I only had it on for a few minutes because the CPU fan is still running on MAX.
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Aug 27, 2012
I installed Windows 7 on my desktop pc & when it's done the first stage it reboots. Then it takes me to the part where it says 'Completing installation...' and it hangs at that for a minute or two. Then the screen goes black and i dont know
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Aug 15, 2012
Rarely when i am watching videos (it only ever happens when i am watching videos) a black screen will occur and i will need to do a hard restart.I have received this error in the logsI have only installed my new GPU about 3 months ago. The GPU is a radeon 6870. Up to date drivers in everything (including flash player). PSU is 550W XFX (500W is required for the GPU) the GPU is not overclocked.
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Sep 9, 2010
I just upgraded to Windows 7 on my Toshiba Satellite Special Edition laptop that came with Vista 64bit and the other night i downloaded iTunes 10 and told me to restart my machine so I clicked ok and then my laptop shut off and when it came back on the Toshiba screen came up as usual but seemed to stay on longer than normal then it goes to a black screen with a underscore that blinks for a few moments then becomes solid. Ive tried to use the "F" keys to get different boot options because i have the windows 7 ISO disc and a ubuntu disc that I could use but whatever i try my laptop wont process it just does the same thing over and over again and bever proceeds to the actually boot up windows.
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Mar 18, 2011
I have a Toshiba laptop running windows 7. It has been running like a well oiled machine since the day I got it.I turned it off to watch TV, then when I turned it back on, the screen shows the Toshiba screen for about 1/4th of a second and then goes black.If I hit F8, F10, or F12 nothing shows up.
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Mar 18, 2012
While attempting to restore a previous backup of my system (with Norton Ghost 15), I got an error, and the system rebooted. Upon reboot, I get the black screen of death with just the cursor instead of the usual login screen. I have tried the following thus far: These all give me the black screen of death with movable cursor:boot in safe mode boot in safe mode with networking boot in safe mode with command prompt last known good configuration I did an initial system startup repair which went through and said it repaired it, rebooted, but no change. I did a pre-boot diagnostic test - nothing memory test - nothing tried restoring from restore point, but it says I don't have any (LIES! BLASPHEMY!) tried restoring from restore point on external disk - seemed okay, then failed. chkdsk - found some stuff, fixed it, no change. tried ctrl+alt+del on black screen of death - nothing
Now, I know that the hard drive itself is alright, that is, the information is still all there still. While I can't give you exact specs, I can tell you that I am on a Dell Studio XPS running Windows 7 home premium 64 bit. I'm at a loss as to what else to do. Despite being a black screen, with just a movable cursor, the system still appears to be running, as every few minutes, it will show the "thinking" cursor, where it shows the little circle next to the arrow.
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Sep 15, 2012
My system runs completely fine, but whenever I try to LiveBoot my screen goes black after about 5-10 minutes. Same goes with when I try to do a daily Windows Format/Installation and Safe Mode.
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Mar 5, 2011
Alright, so my Acer laptop has been working fine with no problems at all since i bought it about 2 years ago. This was until yesterday where i turned it on, just to see no login screen, only a black screen with a moveable cursor
I tried ctrl+alt+delete didn't work
I tried to repair windows with the repair disc through a USB, didnt work. It said that windows couldn't automaticly fix the issue, in the log it said:
Problem Signature:
Problem Event Name: StartupRepairOffline
Proglem Signature 01: 6.1.76900.16385
Proglem Signature 02: 6.1.76900.16385
Proglem Signature 03: Unknown
Proglem Signature 04: 0
Proglem Signature 05: Autofailover
Proglem Signature 06: 8
Proglem Signature 07: BadDriver
I tried to restore to previous system points, but didn't have any for some reason
When i boot from the repair disc, i'm able to get into the menu where i chose OS, and found out that when i press Load Drivers, i'm able to access my HDD, where everything seems to be intact, already copied some important work stuff to a seperate HDD if *** won't get working
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Jan 28, 2013
I turn on my computer to eventually get a black screen with white cursor that will move around. The Toshiba insignia comes up beforehand as well as the windows four square icon then it is to this black screen and white cursor. I cant seem to get the computer to boot up from Windows 7 installation disc. Sometimes I also get a BOOTMGR image is corrupt. The system cannot boot. message as well. I imagine there is a solution of sorts as it seems many people have had a similar problem. I have a freind who maybe able to fix it seeing he is a computer programmer but that is not until the end of the week.
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Jan 11, 2013
i have a MSI A6000 Laptop. Ive been trying to fix this problem for 2 day with 12 hours time and read countless forums but still haven't been able to solve it.
I recently encountered windows 7x64 installation error, where i could not select disk partition to install. ( i formatted and deleted all of the partitions for a clean install). But somehow after running the memory diagnosis i was able to go through the installation. But during the installation on the second time it restarts, my computer gets a black screen when starting.
i cannot access the post screen menu or the recovery option( it is however possible to access the same thing via booting through the USB and selecting the recovery option instead of installing). Also the memory diagnosis tool does not work any more giving an error. The bios options are as follows:
MAIN : Serial ATA [Hard Disk]
Serial ATA [ATAPI CDROM]
Advanced: PCI Latency timer [64]
Legacy USB support [enabled]
AHCI Mode [endabled]
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Aug 15, 2012
I am getting an error message on a black screen saying my Windows 7 is not genuine?
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Jun 4, 2011
I couldn't find another thread relating to the exact same problem, as they have hijackthis logs etc. whereas I cannot get onto my laptop to do anything at all.I am running a Dell Studio 1555 with Windows 7. When I turn it on I can hear it boot, but everytime the screen just stays black. I cannot start it in safemode or do anything. It is just blackI can think is that the other day I used CC Cleaner and it did some things to the registry. Otherwise I have not downloaded anything or done anything that should suddenly make it stop working.
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Jun 14, 2010
I tried Linux yesterday, and wrote over my previous Windows bootloader files with GRUB.
I later that day (as I could not boot into Windows 7), I deleted the Linux partitions with Windows 7 DVD. Now, after BIOS I just get a white blinking border on a black screen.
I tried
bootrec /fixmbr
Success
bootrec /fixboot
Success
bootrec /rebuildbdc
Success
bootrec /scanos (Total identified Windows-installs: 0)
I also tried the "automatic" systemrepair (1st choice in the DVD menu, with no luck)
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Nov 28, 2011
I have purchased an OEM pc yesterday and I installed windows 7 x64 on it. Everything went great with installation. No errors or anything. But when I restarted my computer, after the motherboard splash screen a black screen with a blinking cursor top left appears and windows doesn't boot. But sometimes, especially when I wait a few minutes to turn it on it boots normally till I shut it down. It is so random.
My specs are:
Motherboard: gigabyte 970a d-3
Memory: CORSAIR 4GB VENGEANCE DDR3 1600MHZ CL9(*2)
CPU: AMD phenom ii x6 1100t black edition 3 .3ghz
GPU: Sapphire hd 6870 1GHZ
PSU:700watt
OS: Windows 7 Ultimate x64
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Sep 24, 2012
I need help and suggestions on what to do with this black screen crisis. Mine is a little different that others. so sorry if this is a repeated thread. ive looked everywhere, and no one has the issue when they have dual boot.I have dual boot on my laptop with windows 7 ultimate 32 bit and windows 7 home premium 64 bit. the home premium came pre installed on the laptop and the ultimate version i installed later dual boot (i needed some capabilities that home premium doesn't have).I cannot see anything on my screen after windows logo while booting up my laptop bcz of the black screen after the windows logo. When i boot into WINDOWS 7 HOME PREMIUM. i hear windows logon screen notification noise but see nothing! oddly enough even my built in webcam logs me in with VeriFace software with my face, passwordless! ALSO my laptop boots fine with windows 7 ultimate and i can see everything, and it works great! i need the other version to WORK cause my life is in that other version of windows. i cannot factory restore!!!
What i have tried: the keyboard is also unresponsive, bcz i held down a bunch of keys to see if it makes the beep noise. I closed the laptop lid to see if it goes into hibernation and waited 3 mins to see if it still does, so that when i open it i can see everything (it has worked before). nothing. i rebooted a bunch of times even with a second screen attached, tried to guess switch into projector mode with my function key and switch screen/projector button. i have also done a power cycle. i think the registry is screwed, or maybe the graphics card drivers are ruined. have not done a registry repair through the other windows version (doing that next). i have defragged both partitions for both of the windows 7 versions through the one that works.What may have caused it: the last time i used home premium, i rebooted so that i can use the ultimate version (for the extra capabilities). i was not watching and it booted up in home premium, and the built in cam is so fast that i merely looked at the laptop and it logged me in. i was being unpatient, bcz you have to wait for the lenovo programs to load before you can restart. so i forced shut down (very bad idea) by holding the power button and booted up in ultimate finally while watching.
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Nov 2, 2012
windows 7 on my laptop will not boot it goes to the toshiba screen then black with cursor in top left. i cannot go to safe mode or startup repair because when you hold F8 or any other key it just beeps. im trying to keep from trying the factory reset.
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Nov 2, 2012
windows 7 on my laptop will not boot it goes to the Toshiba screen then black with cursor in top left. i cannot go to safe mode or startup repair because when you hold F8 or any other key it just beeps. im trying to keep from trying the factory reset.
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Aug 30, 2011
The Windows logo appears and everything seems fine. Then everything goes black with no sounds. It will then reboot and cycle back through the same way.
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Oct 16, 2012
My OS is windows 7 Home premium upgrade from XP, 64 bit, I have been running this for a couple of years without any problems. I returned from holiday on Saturday, switched on the PC and as I only had a 'medium health' message, I scanned with 'Paretologic', this did not increase the level of health condition, but it did throw up some unwanted processes which I disabled, (could I have disabled explorer.exe by mistake?) When I restarted the PC the 'starting windows' screen with the flags came up and after a few minutes the black screen appeared with the cursor in the centre, now I don't know if it means anything but occasionally the 'spinning ring' appears, only for a couple of seconds but it would seem like it is attempting to start? Safe Mode, for some reason, is not available, neither can I set an earlier Restore point. I have carried out a check with the 'repair disc' no problems reported, I have also carried out a 'scannow' from the command point and the integrity is okay. I have downloaded a copy of the Explorer.exe but don't know how to install, I don't think it is a virus or Malware but I have a scanner to install if I knew of a way to load it. Without any form of access to the OS I am lost to know where the problem is.
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Nov 1, 2012
when I try to start window 7 after the window logo, I'm stuck with and my mouse. I already have try many things :
Start safe mode doesn't work
Press ctrl+alt+deleted doesnt open it
Repair doesn't seen to work.
Chkdsk find unreadable content but cannot repair them.
I can't really restore and reformat. What can I do?
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Feb 19, 2012
When I boot up my computer I get a black screen with my cursor. What can I do? This happened when i installed a skin at [URL]
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