Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I recently bought a Rosewill 750-M PSU to replace an Antec Earthwatts 500. My computer worked fine before making the switch. After installing the Rosewill PSU, I attempted to boot. Fans spun up for a second, then turned off. After a second, they spun up again and stayed on. However, I had no video output. I put the old Antec PSU back in, and still had the same problem. I put another GPU in the computer, trying both PSUs, and still nothing. I switched out the monitor also, which didn't work. What should I do?

share|improve this question
You should at least check whether it supplies the correct voltage on 3.3, 5 and 12 V. This is where PSUs usually fail (at least for me). – Joey Oct 27 '12 at 16:36
is there any sound when the computer start up? – Chin Oct 27 '12 at 16:39
Only sound I hear is the fans. – GregoryComer Oct 27 '12 at 16:50
If there's no video, sounds like a bad pin/cable connection. Check the fan and power connectors of the GPU and CPU for bent pins, then try replacing the cables. – Paul Sweatte Apr 16 '13 at 1:07

You must log in to answer this question.

Browse other questions tagged .