Quote Originally Posted by User111 View Post
I have Gigabyte GA-EP45-UD3R 1.1 with bios F9 (and Windows 7 RC 64) (I use default settings) and sometimes my pc reboot without reason. When my pc start again, it give out a short and continuos beep (beep-beep-beep-beep...) and it turn off. My pc reboot again and give out these curse beeps (the loops repeat continuously except I break the current for 15 minutes..) Why? I'm becoming crazy..
Power supply? Video card? Ram?

What are your system specs?

I would reset cmos, set all values to stock settings (hard values, not auto or norm), then run memtest. Also, check psu voltage values while priming and idle to see if it's holding well (use a multimeter).