| * Unplug EVERYTHING from the motherboard, except the memory and power supply. With just mobo / memory / PSU, try to boot. If LED's come on, and then after a few seconds it starts to beep, then your mobo is still working. If no beep, reset the mobo BIOS (usually a jumper for that, check manual) and try again. Still no LED's / beeps, your mobo is dead, go buy another one.
* If mobo is working, plug things in one at a time. If it has onboard video, use that as a start. Boot again. Hopefully you will see something on the screen when you boot.
* Next put on the HDD, again see if it boots
* Etc one at a time until you have a working computer.
Video cards can short too easily if they aren't seated right. It IS possible to damage your computer doing this, so always be extra sure you have seated it right... look down the edge make sure its even. Some cards / modo's take a good push to seat properly.
BIOS can also get funny and corrupt sometimes with changing settings and esp video cards.
Good luck! |