Asus P5E3 Pro problems I am new and I need help

Asus P5E3 Pro
Intel C2Q Q9300
Corsair Xmas3 DDR3 4 Gb
Asus EN9800 Gtx
Chieftec POWER Turbo series.
2 seagate hardisk each 500 gb

Problem is than i turn it on computer dont beeps or sometimes does 1 0f 10 times its boots normaly, but freezes (sometimes) when windows 7 64bit loads on. It happend when electicity went down one time. I have tryed things Takin ram out. Somebody knows what it could be wrong ?? Please help :) and sorry for my bad english iam from lithuania.

Thanks:)
 
First, don't worry about your English. It is fine. :)

It could be your power supply. Do you have any friends that have computer technical knowledge? And if so do they have a multimeter that can test your power supply?
 
no i dont that is the problem but i tryed to reset bios ago and found another bios it worked nice in like 3 hours but so windows frozzen again.. i pushed the restart on rear panel but computer dont restarts so i should turn it off .. i tryed to turn it on again and it dont make any beeps again.

how to test with multimeter ?
 
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