loser213 :
my problem is i saw my cpu fan and heard the psu fan work but gpu fan are not working + i have change my i3 2100 into i7 2600k + this mobo but actually i got low psu brand gigabyte power rock 420w. when i turn up pc nothing happening just dark screen and no bios display.
Ok, we are making progress. Please clarify:
1. You have changed your CPU into a 2600k, and since then it doesn't work?
2. When you power on your computer, does the fan turn for a little while then stop, or does it keep spinning?
3. Have you reset your BIOS after changing the CPU? If you didn't, try that. See Clear CMOS in the manual.