I have a windows xp pro sp2 pc, everytime i login as a user as soon as the desktop comes up i get the message “Explorer.exe” “the instruction at xxxxxxxxxx referenced memory at xxxxxxxxxx caused an error” if i click on ok then the desktop disapears and then reapears, withe same error message. I have tried a windows repair/re-setting up the user accounts/ sfc/scannow/deleting programs/virus scan/spyware scans.