The symptoms you describe could be viral related or could be caused by hardware problems - faulty power supply, bad memory (RAM), cpu overheating, faulty fans, motherboard, etc.
However, just to be sure download and scan with MS Malicious Software Removal Tool
Then download and scan with Vcleaner Tool
If your not finding any malware then its sounds like the latter problem. Open your machine and clean the fins on the heat sink that sits under the CPU - when they collect dust it restricts the airflow and prevents proper cooling; use a can of compressed air to remove all dust/debris; check your connections and fans to make sure they are working properly; and monitor the temperature. If the computer is overheating, it usually begins to restart on a more regular basis like you are experiencing.
If nothing is found then do this:
1. Right click on My Computer and select properties.
2. Click Advanced tab.
3. Click Settings under Startup and Recovery.
4. Under System Failure uncheck Automatically Restart.
5. Click OK.
Doing this won't cure your problem but instead of restarting you will get a Blue Screen of Death (BSOD) with information displayed that will allow you to better trace your problem.Download and run Motherboard Monitor 5
. If Motherboard Monitor's seems to be reporting high temperatures for your CPU check to see what your max CPU temp is from here
You can try Microsoft's Online Crash Analysis
- The Windows Memory Diagnostic tests the Random Access Memory (RAM) on your computer for errors. The diagnostic includes a comprehensive set of memory tests.
Also see Memtest86+: http://www.memtest.org/
Edited by quietman7, 04 July 2006 - 05:48 AM.