I tried to defrag about a week ago and was advised that I did not have the required 10% memory available to complete the defrag. I commenced copying files to other media (Maxtor drive and CD-R), then eliminating files and uninstalling unused programs to free up memory.
I used Roxio 5 CD Creator to copy pictures and files to CD-R. This process locked up several times and I had to force the PC to close by holding in the power button each time. 2 days ago, when rebooting from one of these forced closings, the PC went to a blue screen that advised it was going to check disks on the PC. I let this run and it gave an error message faster than the human eye can read it. I found how to keep this message up: "Stop 0x0000007e-(0xc000005, 0xf77ecc27, 0xf8be1840, 0xf8be153c: tbspud.sys address f77ecc27base@F77d400 datestamp 3b8d7887. It then reboots to this unless interrupted by hitting any key in 10 seconds. The PC then successfully boots, slowly (3 minutes to use a program). I have used the RUN cmd to try to use the chkdsk /f command but have been advised that the disk is in use and do I want to run chkdsk automatically when I reboot Yes or No. I enter Y and I still get the same loop on rebooting.
I do now have memory volume reduced below that magic 10%.