hi, as your system has been infected with a very destructive Malware, you will need to post a log in security section. What i believe is that there are still files left from this infection.
In the meantine before your pc crashes or freezes, press ctrl+alt+del then go to processes, do you see any using alot of memory and cpu usage, if so end it.
Try accessing safemode, power on pc then click on safe mode, this will give us a better understanding of what might be causing this problem, because safemode loads less processes and programs. Crashes can also mean corrupt system files, this can be repaired by clicking start then run and type
sfc /scannow. Then insert your xp disk and click retry, this will scan all system files making sure that they are all accurate.
Other thing you can check for is overheat, take all cables out from the pc, then clean the fan using a brush or air canister, and close case back.
click start, then run and type cmd
type chkdsk C: /r
The c will be replaced with your localdisk.
Lastly, click start then run and type msconfig
click on start up tab, uncheck everything and restart machine.
By the way this problem how long ago did it occur? i have seen posts where SP3 has provided this issue, maybe uninstalling this might come to your aid.
Edited by fardin100, 06 April 2009 - 04:29 PM.