CPU usage and mouse problem

[buffbiff21]

When I run something such as SuperPI or Prime95, (programs that eat up CPU) my mouse gets all jerky and starts doing very weird stuff, like going to and clicking the start menu, disappearing and reappearing across the screen.

At first i thought it may be a mouse driver probelm, but i closed the driver program and it still did it. This happens at stock and when i overclock. In my 5+ years of computer experience, i have never come across anything like this.

What the hell is this caused by??
my specs are in my signature

 

[MrkXCeL]

Heard 'bout problems like this years back, with first gen USB mice. The USB bus takes more CPU and depends on it more than a PS/2 bus. Try using a PS/2 adapter on the mouse and see if that helps. GoodLuck.

 

[buffbiff21]

Well... my mouse is ps/2. Its a newer wireless one, by Logitech.

And I also tried it again, it seems to happen only WHEN i overclock.

UPDATE:

Nevermind, it just jumped to the start menu and clicked when I was running prime.