BleepingComputer.com: Computer randomly restarts

While I am playing a game, or just watching youtube videos my computer restarts randomly. Is it a hardware problem? I am so confused!

Please, post some computer info:
- processor type, amount of RAM (hold Windows logo key, hit Pause/Break key)
- hard drive size/free space (open "My Computer", right click on hard drive letter, click "Properties")
- security programs in use (antivirus, firewall)

Download, and install SpeedFan: http://www.almico.com/sfdownload.php
Post your computer temperatures:

AMD Antholon XP 3200+
2.19 GHz 1.00 GB of RAM
152 GB hard drive
80 GB free space
AVG anti virus
I posted the fan thing as an attachment is there a better way to do that?

Ugh, something is very hot at 93C!

Let's double check...

Download, and install Everest: http://www.majorgeeks.com/download4181.html
Expand Computer folder.
Click on Sensor.
Post all info from there.

There you go

Still inconclusive, but...
If 93C is for your video card, it's very, very hot.
If it's for CPU, it's a disaster.
Your CPU max temp is listed at 85C

Turn your computer immediately off.
Get a can of compressed air (nothing else is permitted).
Open computer case and do nice cleaning inside.