Windows 7 Fatal Error Repair

bennyc

Hi I have an all in one PC that is throwing a
Stop: c000021a fatal system error at boot,
The following didn't work, auto repair, safe mode, system restore, no option to recover the OS without factory restore built in,
I cannot afford to factory reset this as the system is for a till and an account system that was bought but out of support therefore I want to do everything possible to somehow repair the OS without loosing the programs. I have the data btu wont be able to reconfigure the system.
I have made a clone of the HDD so I can mess around with the clone and make another if necessary.
The OS according to the sticker is 7 Home Premium OEM, I have had a go at upgrading using a pro disk but wont run as the last boot failed, is there a way around that ? I am currently downloading a 7 Home disk to try and run the repair but I am not to hopeful on that.
Any other suggestions ?

200motels

bennyc wrote: »

Hi I have an all in one PC that is throwing a
Stop: c000021a fatal system error at boot,
The following didn't work, auto repair, safe mode, system restore, no option to recover the OS without factory restore built in,
I cannot afford to factory reset this as the system is for a till and an account system that was bought but out of support therefore I want to do everything possible to somehow repair the OS without loosing the programs. I have the data btu wont be able to reconfigure the system.
I have made a clone of the HDD so I can mess around with the clone and make another if necessary.
The OS according to the sticker is 7 Home Premium OEM, I have had a go at upgrading using a pro disk but wont run as the last boot failed, is there a way around that ? I am currently downloading a 7 Home disk to try and run the repair but I am not to hopeful on that.
Any other suggestions ?

Have you tried last known good configuration after pressing F8? This should work as the problem you have is corrupt start up files at boot up.

d31b0y

Try running SFC /scannow too. You can run it on a secondary disk (depending on how you cloned your drive).
http://superuser.com/questions/869094/how-to-run-a-system-file-check-on-an-external-hd

cunnijo

See the link below with a suggested solution from Microsoft. It also details the potential causes.

http://answers.microsoft.com/en-us/windows/forum/all/blue-screen-error-c000021a-fatal-system-error/549075f8-f695-4047-b747-2b4e118e1ffd?auth=1