Computer shutting down with no warning?

lewisaro1

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Oct 10, 2012
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Hi there, ive recently build a custom system that is shutting down without a warning, its not overheating because i have ran several stress tests for hours with no problems however it often shuts down with no warning, i have replaced the PSU so thats not the problem, what could the problem be? thanks!

specs: AMD A4 3300
Biostar A55MLC2 Socket FM1 VGA 6 Channel Audio mATX Motherboard
Kingston 4GB DDR3 1066MHz Memory Non-ECC CL7 1.5V
CIT 400W Dual 12V Rail PSU V2.2- 12cm Fan - 20+4pin 3x SATA 1x PCI-E
(all brand new parts)
 

lewisaro1

Honorable
Oct 10, 2012
294
0
10,860
if anyone is having this problem i have found that upgrading the power supply was the fix, the PSU that i used before was broken and the second one i tried was not enough wattage, so ye hope this helps!