Check Your Motherboard:
- Remove every connection and component from your motherboard except for the power, front panel, CPU assembly, RAM and graphics card, switch it on.
- If you have more than one stick of RAM test them one at a time.
- If this works then reconnect your other devices (Switch it off first!) one by one until you find out which one is causing the problem.
- If your hear sounds of the disk starting, but nothing ever happens on the screen, the BIOS might be corrupted. That can happen when you try to flash it with a newer version, or if an ugly virus flashes it with garbage. If so, the BIOS needs to be reloaded correctly, or the chip replaced. Note: Not all computers have their BIOS in a flashable EPROM, so this might or might not apply.
- If the board makes a sequence of loud beeps, there is a hardware error in one of the basic components. Two beeps mean 'no monitor found', four beeps 'no memory found', etc. (that list is not for sure). It is the BIOS reporting that it misses an elementary part to continue. Find out which part is broken (or really missing), and replace it.
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