how to know if my power supply unit is bad in my pc?
when i turn the power on in my dell xps 420, the light in front, "power on light" is a solid yellow and the little led on the back of the power supply unit blinks a greeen light non-stop. The computer doesnt boot and doesnt post.
I have unplugged everything and reseated, "ram, video card, cpu" and checked all wire connections and everything looks fine.
Culd this mean its the psu at fault here or is it the motherboard?
You mean the power light is Orange-yellowish? If so, the PSU has failed. Just to make sure, you're computer doesn't bother to turn on at all, correct? If your computer doesn't start at all then it is the PSU. Most likely it was damaged by a power shortage or something else.
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