The two most common reasons for computer lock -ups and auto shutdowns are heat and voltage instability
three things to do:
1) install sandra lite (free) to monitor your system temps and system voltages and cpu tempshttp://www.download.com/3000-2086-10018691.html
once you have downloaded the program >>> copy and paste your system voltages and temps in here for evaluation
take some recordings right after a fresh reboot >>> record -copy-paste the results in here
then also a "working" test >>>run a system defrag-anti virus scanner-spyware scanner - play some music files all the same time after 15 minutes of multi tasking take another system recording
2) run memtest86.com (free) run it to check memory errors >>> run for at least wo hours
3) give us complete system specs of your computer and PSU size and maker as well >>> chances are your PSU is a dud cheap generic PSU's put out erratic unstable voltages >>> when the sensitive compoents such as motherboard and cpu get fed voltages that are more erratic than their tollerance then they produce an autoshutdown to save themselves if your PSU is a case combo deal 85% of the time those PSU's are junk
remember if the voltage supplied by the PSU is lower than its needed output that produces a low voltage situtation which makes components heat up big time >>>> auto shutdown
low amperage on the 12V rails will cause an auto restart >>> if your system needs 16amps to run and youre system only puts out 15amps >>> then you will get an auto restart
Good quality PSU's are Enermax and Antec line right now the best deal going on the market that balances best quality with lowest dollars is the Antec SP-500 for $68.00 I have not seen a high quality PSU for any less money yet ????
The PSU is an ultra important componet of a stable computer system >>>> yet it seldoms gets the quality power plant it needs to operate the system properly >>>> because a high quality $$$$ PSU will not make your system run faster, or prettier or video games clearer so people cut corners on the PSU spec >>>> but a bad PSU will bring your system to its knees
good luck and let us know the results of your monitoring
Edited by linderman, 31 December 2005 - 11:19 AM.