Why do my CPU and case fans spin but no startup?

"Have you tried DrGlowire’s suggestions?

O.K., now unplug the power cable from the power supply and press power button for 10 seconds

Gently remove the silver “coin” battery from the motherboard.

If you know where they are, short-out the two pins with the jumper OTHERWISE just leave the computer unplugged for at least 10 minutes or longer.

This will reset the BIOS setting to the “new” computer defaults.

Then plug power cable in and switch on.

If this doesn’t work you MAY have a bent pin on the CPU or the like."

"There are a few things to try. You can check the voltages coming out of the power supply, you can check the cables to make sure they are seated properly.

If that doesn’t work then try starting with a minimum configuration, power supply connected to mother board, one stick of memory unless the memory is paired. Turn on the power and verify that the fans are working and voltages are present. Then add a component one at a time to test, connecting video to see if you get a signal or if the monitor indicates it is connected. From your description of using random parts I would guess that one or two parts may be defective or incompatible."

"Any beep codes after turning on?

Does drive light come on?

Any flicker, etc. on monitor screen?

Have you tried unplugging everything except 1 RAM card (alernate these) and power supply?

Graphics card - on bopard or a card in slot?

Some motherboards have a key componation that resets the BIOS or remove battery clear .

Have you tried various components in another working system?"

"I had issue with the ram.. 1 of the ram stick was faulty. Taking the faulty ram out solved the issue for me.

Mine was 1 year old pc. Not new setup."

"Hard drive plugged in? Loose RAM? Bad PSU? Corrupted BIOS?

Add a comment if there’s anything specific about the machine."