I'm sure this topic has been brought up before. And there are many different reasons why a persons CPU usage shows 100%.
In my case I run a Micro Client Pro Custom built Desktop on Windows XP Home Intel R, Pentium 4, CPU 2.40GHz, 760MB of RAM.
I used my system strictly for music. I run M-Audio Pro Tools 7.1 with M-Audio Delta 1010 drivers, & Digi Design Command 8.
The other day I was in a recording session and out of no where I get this error where Pro Tools can no longer locate my audio files on my C (Audio Drive). And I was like what??? I use a Seagate 80gb for my secondary drive and have plenty of room. I looked at my Audio Waves & there gone. So I close Pro Tools and go to open up my Digi Design file & my computer was not showing my C Drive. And I was like okay. So I thought possible loose ribbon cable. So I had shut everything down & check the inside of the sys, no problems. I reboot the sys & go back to Pro Tools. As soon as I hit play I hear clipping / scratching in the audio & it's dragging slow, then I get a error message from Pro Tools saying CPU Usage is at 100% use less plugins.
The only problem is I had no plugins running to take up any CPU!
I open my Task Manger and sure enough see the Meter sky rocking to 100%. NOW keep in mind I do not use the internet at all on this sys, and don't even have the net connected to the sys, its only for music. I ran my bios, the temp checks out fine, the IDE configuration seems fine. So I then removed my audio drivers & uninstalled Pro Tools. And I am still getting the 100% disk usage and I notice the Meter is flashing in the Red with Green! Is that even normal???? I also notice the sys is trying to locate a Multimedia Audio Controller but I disconnected my Command 8 and removed the driver. So what's that about?
I'm really clueless at this point. I'm not a huge Windows tech, but know enough with what I work with but this has me stomped and I need some advice and direction with the cause I stated above.
Look forward to any help offered, thanks in advance.