On installation of 'Windows 7', after installing needed drivers, some of which were designed for XP or Vista, on a Toshiba Portege M200 (Tablet PC from 2003) and Windows 7 automatically downloading and installing updates: Windows 7 can't boot. It goes directly to the Automated System Recovery and no matter which option I choose it fails to fix the problem. Sometimes it says it did fix the problem and didn't. Sometimes it says it failed to fixed the problem and in those cases the Diagnosis and Repair details says as: Root cause found: Boot manager failed to find OS loader. Repair action: File Repair Result: Failed. Error code = 0x490 Time Taken = 4767 ms Repair action: Boot configuration data store repair Result: Failed. Error code = 0x490 Time Taken = 150ms Repair action: System Restore Result: Failed. Error code = 0x1f Time taken = 68489 ms What is the cause of this? And how do I fix it? The harddrive is brand new and a full memory check said the RAM was good.

I had the same problem on one of our laptops. This has 2GB of memory so it appears to be related to that and Windows updates. I did the following from the following Microsoft article which resolved the issue for me http://support.microsoft.com/kb/927392/en-gb . To run the Bootrec.exe tool, you must start Windows RE. To do this, follow these steps: Put the Windows Vista or Windows 7 installation disc in the disc drive, and then start the computer. Press a key when you are prompted. Select a language, a time, a currency, a keyboard or an input method, and then click Next . Click Repair your computer . Click the operating system that you want to repair, and then click Next . In the System Recovery Options dialog box, click Command Prompt . Type Bootrec.exe, and then press ENTER. Note To start the computer from the Windows Vista or Windows 7 DVD, the computer must be configured to start from the DVD drive. For more information about how to configure the computer to start from the DVD drive, see the documentation that is included with the computer or contact the computer manufacturer. !\[\](http://support.microsoft.com/library/images/support/kbgraphics/public/en-us/uparrow.gif)Back to the top Bootrec.exe options The Bootrec.exe tool supports the following options. Use the option that is appropriate for your situation. Note If rebuilding the BCD does not resolve the startup issue, you can export and delete the BCD, and then run this option again. By doing this, you make sure that the BCD is completely rebuilt. To do this, type the following commands at the Windows RE command prompt: bcdedit /export C:\BCD_Backup c: cd boot attrib bcd -s -h -r ren c:\boot\bcd bcd.old bootrec /RebuildBcd /FixMbr The /FixMbr option writes a Windows 7 or Windows Vista-compatible MBR to the system partition. This option does not overwrite the existing partition table. Use this option when you must resolve MBR corruption issues, or when you have to remove non-standard code from the MBR. /FixBoot The /FixBoot option writes a new boot sector to the system partition by using a boot sector that is compatible with Windows Vista or Windows 7. Use this option if one of the following conditions is true: The boot sector has been replaced with a non-standard Windows Vista or Windows 7 boot sector. The boot sector is damaged. An earlier Windows operating system has been installed after Windows Vista or Windows 7 was installed. In this scenario, the computer starts by using Windows NT Loader (NTLDR) instead of Windows Boot Manager (Bootmgr.exe). /ScanOs The /ScanOs option scans all disks for installations that are compatible with Windows Vista or Windows 7. Additionally, this option displays the entries that are currently not in the BCD store. Use this option when there are Windows Vista or Windows 7 installations that the Boot Manager menu does not list. /RebuildBcd The /RebuildBcd option scans all disks for installations that are compatible with Windows Vista or Windows 7. Additionally, this option lets you select the installations that you want to add to the BCD store. Use this option when you must completely rebuild the BCD. After following the above i then ran the following from command prompt: bootrec /fixmbr then bootrec /fixboot This resolved the issue for me and allowed me to log on to the PC in its previous working state. Great stuff. Hope this works for you!

Gateway GM5472 I am having the same problem and am a total clutz when it comes to this stuff, Vista installed what I think was SP2 and then rebooted to the BSOD, I shut vista down and rebooted the machine which went right to the repair screen and it will not go into safe mode just goes back to the screen, I ran the SEA tool and the disc is fine then read that if I put the hard drive in another machine as a slave I should be able to access the drive and yes I can. Also my operating system install disk has developed a crack so is useless and Gateway can find no record of the serial number so I cannot get a new disk. Is there anyway that I can down load the vista program to another disk or is there a way to find what file is messing this drive up? There are a lot of folders in the windows folder.

i am having a very simaller problem, every once in a while i can get it to rebooot if i let it sit overnight, but the only program i have been able to install was my wireless card software. after i got onto the internet for the first time windows update opened, and i began having the same problem that everyone here has been having. when i do shutdown or reboot i either get something like OS failed to load, or boot manager is missing, or it will just give me DSK Read error, it also fails to start up my key Board so i cannot boot from cd or go into any of my start up menus. i recently put in a new hard drive because the computer used to start up and say that the hard drive was failing so it could not boot up windows, i was going to get a new drive anyways because my old one was too small. this kindof solved the problem because i have only seen that screen once since i re-installed windows 7. if i try to install anything it gets halfway through the instalation process and then the computer freezes, if i let it sit it restarts itself and i can never get task manager open. when i try to open task manager it says that there was some login error. i relly need to have a working computer for school, and i cant downgrade because i dont have XP, and i was having more problems with vista than i have had with windows 7.

While it's good to know that I'm not alone in having this problem, I'm not too pleased to see that with all this who seem to be experiencing it are still looking for answers. I have this exact issue and have tried everything mentioned above and still have it and still driving me crazy. And if it helps, this is on my Dell Inspirion 9300 laptop. Has this issue been solved? If so, can someone point me to the cure? I'm in desperate need of getting this fixed as I'm a college student and I REALLY need my laptop. I'll go back to XP if I must, but I really want to move up to 7. Anyone? Vance

Hi David/all: Same issue with an HP/Compaq nc6400 laptop. Fresh install of Windows 7 Ultimate; everything is peachy. Run Windows Updates and, upon reboot, Startup Repair ... Try to System Restore - no dice - some of the Restore Points fail; other Restore Points seem to work, but upon reboot - Startup Repair. Don't have time to keep messing with this. If no solution, will just have to go back to Windows XP for now. Regards, -Andy

Automated Startup Repair fails. Cannot find OS Loader.

Anonymous

On installation of 'Windows 7', after installing needed drivers, some of which were designed for XP or Vista, on a Toshiba Portege M200 (Tablet PC from 2003) and Windows 7 automatically downloading and installing updates:

Windows 7 can't boot.

It goes directly to the Automated System Recovery and no matter which option I choose it fails to fix the problem.

Sometimes it says it did fix the problem and didn't.
Sometimes it says it failed to fixed the problem and in those cases the Diagnosis and Repair details says as:

Root cause found:

Boot manager failed to find OS loader.

Repair action: File Repair

Result: Failed. Error code = 0x490

Time Taken = 4767 ms

Repair action: Boot configuration data store repair

Result: Failed. Error code = 0x490

Time Taken = 150ms

Repair action: System Restore

Result: Failed. Error code = 0x1f

Time taken = 68489 ms

What is the cause of this? And how do I fix it?

The harddrive is brand new and a full memory check said the RAM was good.

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Answer accepted by question author

Anonymous

I had the same problem on one of our laptops. This has 2GB of memory so it appears to be related to that and Windows updates. I did the following from the following Microsoft article which resolved the issue for me http://support.microsoft.com/kb/927392/en-gb.

To run the Bootrec.exe tool, you must start Windows RE. To do this, follow these steps:

Put the Windows Vista or Windows 7 installation disc in the disc drive, and then start the computer.
Press a key when you are prompted.
Select a language, a time, a currency, a keyboard or an input method, and then clickNext.
Click Repair your computer.
Click the operating system that you want to repair, and then click Next.
In the System Recovery Options dialog box, click Command Prompt.
Type Bootrec.exe, and then press ENTER.

Note To start the computer from the Windows Vista or Windows 7 DVD, the computer must be configured to start from the DVD drive. For more information about how to configure the computer to start from the DVD drive, see the documentation that is included with the computer or contact the computer manufacturer.

!\[\](http://support.microsoft.com/library/images/support/kbgraphics/public/en-us/uparrow.gif)Back to the top

Bootrec.exe options The Bootrec.exe tool supports the following options. Use the option that is appropriate for your situation.

NoteIf rebuilding the BCD does not resolve the startup issue, you can export and delete the BCD, and then run this option again. By doing this, you make sure that the BCD is completely rebuilt. To do this, type the following commands at the Windows RE command prompt:

bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd

/FixMbr The /FixMbr option writes a Windows 7 or Windows Vista-compatible MBR to the system partition. This option does not overwrite the existing partition table. Use this option when you must resolve MBR corruption issues, or when you have to remove non-standard code from the MBR. /FixBoot The /FixBoot option writes a new boot sector to the system partition by using a boot sector that is compatible with Windows Vista or Windows 7. Use this option if one of the following conditions is true:

The boot sector has been replaced with a non-standard Windows Vista or Windows 7 boot sector.
The boot sector is damaged.
An earlier Windows operating system has been installed after Windows Vista or Windows 7 was installed. In this scenario, the computer starts by using Windows NT Loader (NTLDR) instead of Windows Boot Manager (Bootmgr.exe).

/ScanOs The /ScanOs option scans all disks for installations that are compatible with Windows Vista or Windows 7. Additionally, this option displays the entries that are currently not in the BCD store. Use this option when there are Windows Vista or Windows 7 installations that the Boot Manager menu does not list. /RebuildBcd

The /RebuildBcd option scans all disks for installations that are compatible with Windows Vista or Windows 7. Additionally, this option lets you select the installations that you want to add to the BCD store. Use this option when you must completely rebuild the BCD.

After following the above i then ran the following from command prompt:

bootrec /fixmbr

then

bootrec /fixboot

This resolved the issue for me and allowed me to log on to the PC in its previous working state. Great stuff.

Hope this works for you!

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43 additional answers

Anonymous

2010-02-07T02:34:02+00:00

Gateway GM5472

I am having the same problem and am a total clutz when it comes to this stuff, Vista installed what I think was SP2 and then rebooted to the BSOD, I shut vista down and rebooted the machine which went right to the repair screen and it will not go into safe mode just goes back to the screen, I ran the SEA tool and the disc is fine then read that if I put the hard drive in another machine as a slave I should be able to access the drive and yes I can. Also my operating system install disk has developed a crack so is useless and Gateway can find no record of the serial number so I cannot get a new disk. Is there anyway that I can down load the vista program to another disk or is there a way to find what file is messing this drive up? There are a lot of folders in the windows folder.
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Anonymous

2010-01-09T19:28:43+00:00

i am having a very simaller problem, every once in a while i can get it to rebooot if i let it sit overnight, but the only program i have been able to install was my wireless card software. after i got onto the internet for the first time windows update opened, and i began having the same problem that everyone here has been having. when i do shutdown or reboot i either get something like OS failed to load, or boot manager is missing, or it will just give me DSK Read error, it also fails to start up my key Board so i cannot boot from cd or go into any of my start up menus.

i recently put in a new hard drive because the computer used to start up and say that the hard drive was failing so it could not boot up windows, i was going to get a new drive anyways because my old one was too small. this kindof solved the problem because i have only seen that screen once since i re-installed windows 7.

if i try to install anything it gets halfway through the instalation process and then the computer freezes, if i let it sit it restarts itself and i can never get task manager open. when i try to open task manager it says that there was some login error.

i relly need to have a working computer for school, and i cant downgrade because i dont have XP, and i was having more problems with vista than i have had with windows 7.
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Anonymous

2010-01-09T17:52:51+00:00

While it's good to know that I'm not alone in having this problem, I'm not too pleased to see that with all this who seem to be experiencing it are still looking for answers. I have this exact issue and have tried everything mentioned above and still have it and still driving me crazy. And if it helps, this is on my Dell Inspirion 9300 laptop.

Has this issue been solved? If so, can someone point me to the cure? I'm in desperate need of getting this fixed as I'm a college student and I REALLY need my laptop. I'll go back to XP if I must, but I really want to move up to 7.

Anyone?

Vance
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Anonymous

2009-12-20T02:08:48+00:00

Hi David/all:

Same issue with an HP/Compaq nc6400 laptop. Fresh install of Windows 7 Ultimate; everything is peachy. Run Windows Updates and, upon reboot, Startup Repair ... Try to System Restore - no dice - some of the Restore Points fail; other Restore Points seem to work, but upon reboot - Startup Repair.

Don't have time to keep messing with this. If no solution, will just have to go back to Windows XP for now.

Regards,

-Andy
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