I am using Windows XP SP3 with 2 Gb of RAM with a Pentium 4 1.80Ghz processor.. The computer is EXTREMELY slow and sluggish most of the time. Sometimes it is fast and response but then it all of the sudden returns to extremely slow and sluggish - it's like something is taking over the processor.When looking at the Task Manager Performance tab the CPU usage is running between 80 and 100% when there no programs open or running and only the Desktop is displayed.I have run Super-Anti Spyware and it found 69 threats which have been removed.I have run Malwarebytes' Anti-Malware and it found 1 threat which has been removed.I have run ESET NOD32 Anti-Virus and it was a clean scan.I have run the latest of version of CCleaner and cleaned the registry and the Cleaner tab to clean any temp files, etc.I have defraged the drive and also checked/fixed for disk errors.After doing this the CPU usage is still running extremely high with no programs open.Does anyone have ideas as to what I can do or check to fix whatever is capturing the CPU?Thanks.Best Regards, Bill Artman Kansas City - USA1 person got this answerI do too