Custom Build PC. Started having glitches in almost all programs. Usual operations, just this day starting acting all weird/glitches.

I scanned with AVG and got the following changes.

Partition table (MBR) Change
Boot Sector of disc Change
Kernel32.dll Change
wsock32.dll Change
user 32.dll Change
shell32.dll Change
ntoskrnl.exe Change

I attempted to get into System Restore but I get an new window that only allows me to report a windows error.

I got into BIOS, changed to boot from CD-Rom. Put Win XP Disc in and it boots. When I select repair it tells me I have no hard drive recognized. When I attempted to re-install, it tells me I have no hard drive recognized.

NO. 1: Virus? If so, do I just get something like Norton which will allow me to restore to a earlier time? Full Scan with AVG picked up notta except the changes I’ve included herein.

NO. 2: Glitch? I’m lucky to have had a couple years no problems and today is my problem day? It’s a computer, computers get glitches? Am I able to undo the changes to bring me "back to normal?"

NO 3, Good computer tech can breeze through this in 3 minutes?

NO 4, Is there a back-door to get into system restore to restore to a previous time?

I did de-frag the hard drive which took nearly 7 hours (250-gig). I did a Win. System Clean up which took 30 min.

De-frag normally takes 30-min at best. System Clean up takes usually 2-3.

Now de-frag and System Clean up taking the usual short periods of time.

What is a good computer claening software.

Such as a good registry cleaner and optimizer.

U usually use ace utilities but my subscription is expiring and I want to know if theres anything better before I buy again.

Thanks.