pc won't boot to windows

This is H/P pc running windows vista. last week it started running very slow but now it is at the point that it won't boot to windows. In and area while booting you can select the pc to do ( Start up Repair) I clicked on that and it ran. After several minutes, I got a message that start up repair cannot this computer automaticaly. When I went through the Diagnosis and Repair details, only two things jumped out at me:

Test Performed:

Root Cause:
Unspecified changes to system configuration might have caused the problem.

Repair action: System Restore
Result: Failed. Error code = 0x3F8
Time taken = 44461ms

Repair action: System files integrity check and repair
Result: Failed. Error code = 0x4005
Time taken = 32526ms.

I have also tried to boot from safe mode but it also failed.
(What can I do to fix my PC? Thanks for any help on this)

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Clarification Request

Do you have the recovery discs for your HP computer?

"The views expressed in my contributions are my own and do not necessarily reflect the views and strategy of HP"

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There's always restore to factory state

If you've kept good backups of your important documents and files, you can attempt to restore to how the PC came when new. You'd need the media to do such. If not, you attain that from HP. If you need data from the drive first, you put it in some external USB case or attach it to another PC's motherboard and hope it will be recognized. While you're at it, you might do a thorough cleaning, BIOS battery replacement, etc. I'd also suggest running diagnostics on the hard drive and RAM to make sure your problem isn't there. We can't know when the OS was installed but Vista isn't exactly new. Systems do get sluggish over time and for a lot of reasons and starting fresh might buy you a little time until you can replace it. Good luck.

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