aaron.colon@gmail.com wrote

> my question regards testing if a cpu and mobo are functional.

> Functional:
> Power Supply
> RAM

> Items in question:
> 2.5ghz Celeron
> Mobo (from eMachines compter)

> When the PS is connected to the MOBO, the LED on the front
> of the computer (indicating power) is lit. When power switch is
> pressed (to boot computer) nothing happens. Fans do no spin, ect.

> Failed repair attempts:
> 1. Switched the power switch

Best check for that is to connect the two pins used for the
power switch with a screwdriver at the header, carefully.

> 2. Put CPU into an old P4 compatable board running a 1.8ghz P4
> with 512MB pc133 RAM. Computer boots, but hangs. No video
> signal. Perhaps FSB / RAM is incompatible?

Or that older motherboard wont accept that particular cpu.

> CPU shows no signs of visible damage. I am unaware
> of how the PC reached this current state. Best guess
> is some type of power surge, as i had to replace the PS.

The other obvious possibility is that the original PS died and
killed the motherboard in the process. Thats not uncommon.

> Are my MOBO, CPU, or both fried?

Its not common to kill a cpu, its much more likely to be the motherboard.

> any information you can provide is greatly appreciated.

Check for bad caps on the motherboard. These are the usually blue or black
plastic covered post like things that stick up vertically from the motherboard.
The tops should be flat. If any have bulged or have leaked, the motherboard
is dead.