HELP - MY COMP ACTING WEIRD - SHUT OFF BY ITSELF OFTENLY

[beviet]

My comp acting weird
Sometimes it is on for 3 days without any problems. Sometimes it is on for 5 min and then shut off by itself and the alarm went off. Even boot in bios only it still shut off by itself.
The temperature when boot in bios and leave them for 30 min is 53 celcius.
I am using AMD XP2100+ Palomino core and MSI KT400 board with 512MB DDR
3 HD ( 2 7200RPM 0
1 DVDRom
1 DVDRW
350W Enermax
Antec SX830 case
What is wrong
please help
thanks

 

[magomago]

Hombre, what kind of heatsink are you using!!!

53C idle?


When I built my first pc in a couple of years about 2 months ago I used a 1700+ and a volcano 9 and got the same results....but my fans configuration was all messed up.


First of all, make sure sure you have a good heatsink/fan

make sure your casefans are set for maximixing airflow....

Doing that (especially my case fans were screwed) i lowered my temp by 10 degrees in the bios

 

[Xazzu]

yea you're probably just running too hot, try to lower your temp some and see what happens.

 

[beviet]

I used the AMD Retail HSF because I bought a Retail CPU

 

[mechBgon]

If the power is cutting off, you may have poor thermal transfer from the CPU core to the heatsink. Usually this is caused either by some obstruction to thermal transfer (lack of thermal compound, or forgetting to take off plastic cover slip from the thermal pad), or else an improperly attached heatsink. When the CPU overheats as a result, it triggers the power-off by the motherboard for its own protection.

The heatsink is not symmetrical. If you put it on backwards, you are in trouble. Review Figure 7, Figure 13 and Figure 14 of this PDF document and take notice of the step that is cut into the base of the heatsink, and why it is there (to provide clearance over the solid-plastic part of the CPU socket).