|Some computers use what is called "Smart CPU". Smart CPU reduces the CPU speed when you are not running applications, so that your computer can cool off and save power. If your computer is freezing at idle, Smart CPU may be corrupted in your computer's BIOS and needs to be disabled. If this is happening with a laptop, I would not recommend to do what is listed below. If it is a desktop, do this:|
1. Turn off your computer.
2. Turn it on and on the first screen you see press F2 or whatever key combination says it will get you into "Setup".
3. Try to find the Smart CPU setting. Once found, if it is enabled, try disabling it. If not, I don't know how I can help you.
4. Exit the BIOS.
Does the above work?
If it is a laptop:
I would recommend installing the latest BIOS update. Download from the computer's manufacturer's website.
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Dell Dimension 8300
Intel Pentium 4 HT @ 3.20 GHz
4 GB RAM
Nvidia Geforce FX5200