Hi,I played around with my BIOS settings. On error I changed the PCIexpress settings to 150MHz, from where it normaly is at 100MHz. After starting my PC with this setting, it beeped and I switched off power. I know this game, I know to clear the CMOS VRAM to set the BIOS back to its manufactory state. I did that. After that I pluged back the power and switched on the power button of the power source unit. I pushed the power button of the PC and NOTHING happend! Now I will check if I still have a spare power source unit and check with it if the one within my pc tower is faulty.My question here, while I check that, is if I could have broken my mainboard by setting the PCIex to 150MHz?I don't think so myself, otherwise it would not have warned me by making beeping noises, right?But could the power unite have gone bad by this? First I turned down my PC by pushing the front power button and then unplugged the power line...See within my sign what Mainboard I am talking about.Edit: Problem solved. Don't know how, but I unplugged the two main power lines from the power source unit to the mainboard and hat the mainboard totaly off power for half hour. Maybe it had to cool down from the overclocking....So,whithout replacing anything, it runs fine again.

Why were you increasing the PCI anyway? What were you trying to achieve? You've most likely fried your motherboard.