Unable to access My documents or My Computer

Oh, ok.

Are you getting any error messages?

Are you having issues running anything else?

If you are able to, I would recommend to use Microsoft Standalone System Sweeper to scan you system at boot for malware to help make sure it's clean. If you need to, you could create the bootable USB/DVD on another computer to use on yours.

If you did the STEP ONE section at the link above to burn it to the CD, and not just copied it to the CD, then you would need to restart the computer and boot from the CD for it to run as in the STEP TWO section. :)

The STEP TWO section in the tutorial link above can show you more details on this. Usually when you restart the computer, you will see a "press any key to boot from CD or DVD" message. When you do, you will need to quickly press say the space bar to boot from the CD.

If you do not, then you may have an option on the boot screen to press a F key to open the boot menu to be able to select to boot from the CD.

As a test before we get into doing more drastic measures, create a new administrator account, create a password for it, and log in to it to see how it works in this account. Hopefully it's only a issue in your current account.