System Interrupt

[Goksly]

Booo After my pc has been on a while it slowly starts chugging away and eventually crashes. I've looked on resource manager and it's 'System Interrupts'. I downloaded some diagnostics for windows and it turns out to be 'usbport.sys'.

I've upgraded my drivers for my usb devices (just mouse, keyboard and wireless usb) but no joy. Windows 7 Ultimate (64bit).

Anyone have any idea? Cheers!

 

[eggcup]

by crash? do you mean bsod?

 

[Goksly]

Yeah it slowly chugs till it just restarts. Got process explorer running but its just interrupts and dpc that hogs the cpu. probably a stack overflow or something that eventually causes the crash.
Tried disabling everything in device manager (lan ports / sound etc). Tried disabiling usb ports and when i disable them it stops the lag for about 2 seconds and then goes up again. Can't disable them all else I lose keyboard and mouse not allowing me to renable them again.