After stable overclocking to 3.4 or 4 Ghz (or any other Ghz) and leaving PC off for a night, system doesn't switch on.
Already tried different PSU, changed BIOS battery. BIOS is up to date. And I can't find solution anywhere in forums. Finding only answers for those who overclock settings are bad. But my system after overclocking works fine, after restarting no problems. Only then leaving system switched of for long time I have problems. Also if I save my stable overclock settings to Bios profile, after leaving off over night, those settings doesn't work.
PC only works fine then not overclocked.
CPU- Intel q9550
Motherboard - P5Q3 (not Deluxe)
PSU- G7 power extreme 880W
RAM- G.Skill 1600 CL9 (2x4G