Computer reboots...need help

[JoPalm]

Hey guys i just put together the following system:
MSI K7N2G-L nforce 2 mobo w/ onboard graphics.
The system has rebooted itself on two occasions.
One i was watching a divx, behind enemy lines and 5 mins into the film the computer rebooted. So i thought i'd try 3dmark2001se...like 4 secs into the benchmark it restarted itself again. Same w/ CS, it froze when i got into the game. I have 256mb of pc2700 ram running on it (but it only shows 224...why?). I had 512 but 1 stick was defective in that it was causing the comp to hang.
TIA

 

[lameaway]

What are your power supply and CPU cooler? What processor temperatures are you getting?

 

[JoPalm]

CPU temps via bios is 35 celsius (high imo right?). CPU is the stock amd one and PSU is some generic pos that came w/ the case. Think this could be it? It seems to be all video related

 

[DoubleUhat]

most likely is ur psu that cause reboot, defective ram normally hang the system, not auto reboot.

 

[jkellynewyork]

Why dont you trying turning down the speed of your memory -

MY last build I bought PNY 2700 ram which would not run at 333 - the system kept shutting down automatically - I turned it down to 300 mhz (150 bus) and it works fine now - MY first bad experience with ram not running at advertised speeds.

 

[JoPalm]

I figured out the problem, it's the ram. What i did was take a stick of 256 PC2100 from my computer and shoved it into the new computer. Now the new one runs 3dmark2001se fine. Spectek ram sucks . Gonna go back to the comp place tommorow and trade for some better ram. Infineon/samsung/micron are all good right? My own comp has micron.

 

[jkellynewyork]

Originally posted by: JoPalm
I figured out the problem, it's the ram. What i did was take a stick of 256 PC2100 from my computer and shoved it into the new computer. Now the new one runs 3dmark2001se fine. Spectek ram sucks . Gonna go back to the comp place tommorow and trade for some better ram. Infineon/samsung/micron are all good right? My own comp has micron.

yup, thats what my PNY was - Spectek - Never again!!

 

[mechBgon]

Also, the system is showing 224Mb of RAM because 32Mb of it is being used for your onboard video.

 

[JoPalm]

Originally posted by: mechBgon
Also, the system is showing 224Mb of RAM because 32Mb of it is being used for your onboard video.

Ahhh that's why!! Thanks!