Well i tried all of that and t turned out that forcing my mobo to rune DDR2 800 Ram on 400Hz when it was designrd only to run DDR2 667 on 333Hz ram is a bad idea. It's fried (I smelled that something is frying up smell, but I just discarted it, because my win was running ok, 1 hour later this happened). The good thing is that my RAM survived, my HDD survived, my CD-rom survived and my Graphics card survived, also my RAM and possibly graphics card is still under warranty, so I migh be able to refound those.