quick question !

after some quick PM's to Leeghoofd about some E8400 clocking i found a stable 4.0Ghz OC with my stock cooler.. and yesterday when i booted, NOTHING happened so i tried again and saw the boot logo. But the logo went away much faster than it should have and i got a new screen saying i need to recover my bios

so here i am at stockspeeds wondering if i did something wrong or if i got a faulty board ? cus i ran the oc stable for a few days ! did some 3dmark runs and gamed alot..

anyone know what happened ? cus i wanna do some more overclocking as i get my TRUE cooler in the next 2 days <3