Mystery process takes 50% of CPU time

May 30, 2009 at 23:23:50
Specs: Windows XP, 512
I have a PC that has a mystery process that is taking around 45 - 50% of CPU resource on Win XP SP3

When I look at the processes in task manager, everything shows around 0%, but the main % indicator at the bottom of task manager shows around half of the CPU time is being used - and I believe it because the PC is noticably slow.

Hence, it would seem to be an invisible process.

So far I've done a scan for Viruses, Malware, Spyware, Adware. Plus I've run sfc /scannow. I've also stopped all extra tasks starting up using msconfig - no difference.

A mystery!

See More: Mystery process takes 50% of CPU time

Report •

May 30, 2009 at 23:29:12
Older Computer running XP?

Would help if you identified your System and supply particulars.

There is nothing to learn from someone who already agrees with you.

Report •

May 31, 2009 at 00:15:10
More than likely your task manager window is minimized so as to not show all the processes going on in a single window. expand the window and then see what the process is doing it.

It could be a spyware or back up application doing what it is suppose to do.

Change Is Good

Report •

May 31, 2009 at 04:16:25
Most Virus and Spyware scans are likely to work better in Windows Safe-Mode.

To find out what each Startup(or Process) item
does or means, and any recommendation as to if you should close the process:
Task List Programs
The Process Library

Report •

Related Solutions

June 1, 2009 at 18:23:44
I found the problem. It turned out to be the Google Toolbar Notifier.

It was "Security Task Manager" that highlighted it as a potential problem. I then uninstalled it and the extra CPU overhead disappeared.

Still can't understand why Task Manager didn't show up with the related process - it was totally invisible in the process list.

Report •

Ask Question