Troubleshooting : High CPU usage for hardware interrupts

Author: kennethsm
Subject: High CPU usage for hardware interrupts
Posted: 18 May 2013 at 8:11am

Hi, I've been having freezes on my system for the past 3 weeks.

I've managed to narrow the cause(I think) to Firefox. Now I've gone through all the troubleshooting steps for FF to no avail. Typical causes of freezes include loading media intensive sites and/or multiple tabs.

After much trial and error and troubleshooting on FF, the problem still persists. Now I'm beginning to wonder if it's really my system causing the issues or maybe FF is not running in a way the system likes it to.

On my part, I've downloaded the procexp.exe and I've monitored the CPU usage. Now I'm not really a tech guru but as far as I can see the red spike shows 99.97% Interrupts. How do I determine what is causing the freeze and how would I know what is the cause? Software or hardware?

As a precaution, I've also updated all my hardware drivers just to see if it freezes but it doesn't, so I'm very much stumped.

Appreciate if any kind folks can help. Thanks.