The computer i am working on is basically crashing after a few minutes of use, when i look in processes it shows that after a while the cpu usage starts going from around zero up to 80-90 in peaks that repeat until the computer is totally unusable. I have removed any programs that i have recently installed that could be causing this and and i shut down most user processes to make sure that there is nothing that could be causing it running. It started 5 or 6 days ago when i couldn't find another way to uninstall norton av because the uninstaller had been removed somehow by the comp owner who had obviously tried to remove it previously in a very odd fashion, i then used a norton removal tool to get rid of the msi and installed another anti virus program which once installed picked up two viruses, but never completed a full scan. This problem first occured while running an av program that was searching the system volume infrmation/ system restore folder, there seemed to be a huge delay on one file but it did not pick it up as a virus. I am not sure whetjer this is a trojan of some sort causing this problem. I have tried everything i can think of to fix this problem the event reporter shows that the is alot of activety in the sytem volume information/cataloge.wci and the process NMSSvc continually stops and has errors, there are also bits of the system that when you try and access them like the user options in control panel and the system restore function that just appear blank when you run them. I was also wondering if there was any external program that can be installed that reads your system restore points and is able to restore to an earlier time. And i also just noticed an error on the harddisk was detected during a paging operation. Does anyone have any idea what could be causing this? I was wonder any help would be greatly appreciated.