New Corsair PSU not working...... help!!!!

I just bought a new desktop + a Corsair (750w) PSU. Both arrived together and before even using the new computer I wanted to replace the stock psu with the new Corsair. I was able to put in the new PSU with success in a couple hours after thorougly examining where each cable goes.

Then I unplugged everything from my old desktop and plugged into the new one. When I turn on the computer, the desktop botton lights up and I can hear the fan working but nothing shows up on the screen. After a while I knew something was wrong. I opened the desktop up again and put the original PSU back in to see whether the Corsair PSU was malfunctioning or the desktop.

I now know that it was the Corsair PSU that wasn't working. I am using the new desktop with now with the original PSU.

I don't know what went wrong, I plugged the cables into the right places obviously because that's how I was able to put the old PSU back in. The Corsair didn't seem to be broken when I got it so I really have no idea what happened!

Someone please help! :cry:
7 answers Last reply
More about corsair working help
  1. These are the cables/connectors the Corsair 750w PSU came with:

    x1
    ATX 24 pin & 20 pin compatible
    (4 pins can be broken off hence 24 & 20)

    x1
    EPS/ATX12V 8-4 pin

    x4
    PCI-E 6 pin & 8 pin compatible
    (only used 1 of these for the video card)

    x8
    SATA
    (only needed to use 2, don't know why they give you so much)

    x8
    4 pin peripheral
    (absolutely no need)

    x2
    Floppy
    (absolutely no need)


    So to break it down, I only used 4 connecters (ATX 24 pin, 2 SATA and the EPS/ATX12v), just like the stock PSU (disregarding the one I used for the video card) and then I'm left with a whole bunch of extra cables that were not needed.

    I basically just copied what the stock PSU connected to so I wouldn't make a mistake, but it didn't work!

    Here are some specs about my new desktop:
    HP p6630f
    Intel core i3 550
    6 GB RAM
  2. I have a Corsair HX650 modular and it has been working silently in the background for about 6 months. Apply directly to Corsair for RMA information and I'm sure they'll fix you up with a new one. I received a bad XMS2 memory module thru Newegg and Corsair fixed me up in 5 days. The box says my power supply is covered for 7 yrs. I've heard people on the internet say that they're nicely built. Happy Holidays and the best of luck. Dave D.
  3. double_d1 said:
    I have a Corsair HX650 modular and it has been working silently in the background for about 6 months. Apply directly to Corsair for RMA information and I'm sure they'll fix you up with a new one. I received a bad XMS2 memory module thru Newegg and Corsair fixed me up in 5 days. The box says my power supply is covered for 7 yrs. I've heard people on the internet say that they're nicely built. Happy Holidays and the best of luck. Dave D.


    I just realized that it was not the Corsair that was having problems but the Sapphire Vapor-X 5570 Video Card! Every time I connect the PSU to the 5570 the computer won't start! It is only when I disconnect it will it work.
  4. Is the video cable from the monitor connected to the video card or the motherboard port?
  5. Unolocogringo said:
    Is the video cable from the monitor connected to the video card or the motherboard port?


    The video cable (6-pin) comes from the Corsair PSU and I connected it to the 5770 video card
  6. is it a 5570 or a 5770?
  7. shovenose said:
    is it a 5570 or a 5770?


    it's a 5770. And I've got it to work! What I was doing wrong was plugging the VGA to the desktop because thats how my old desktop was like. I realized that I needed to plug the VGA to the video card!!!! :lol:

    Thank you everyone for your help !
Ask a new question

Read More

Power Supplies Desktops Corsair Components