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  1. #1
    ROG Member Array maxjkt PC Specs
    maxjkt PC Specs
    Laptop (Model)Toshiba Satellite P50t-A
    Processori7 5960x
    Memory (part number)F4-2800C16Q-32GRK
    Graphics Card #1HIS HD7950
    Graphics Card #2HIS HD7950
    Monitor6x LG FLATRON E2251
    Storage #1Samsung 950 pro M.2 512 GB
    Storage #2Samsung 840 SSD 250GB + 1TB Segate 3.5"
    CPU CoolerCryorig A80
    CaseRazer H440
    Power SupplyTr2 700
    Keyboard Blackwidow
    Mouse Naga epic
    Headset Kraken
    Mouse Pad Razer
    OS ROG 7 upgraded to WIN 10 Pro
    Network RouterCISCO switch, Netgear N600

    Join Date
    Jun 2016

    Changed my PSU and now the PC won't POST

    Hello I have just changed out my PSU for a Corsair RM1000i, when I powered on the system there was a flash of lights, power light come on for a split second,
    then everything turned off,

    My system,
    Rampage V extreme Edition 10
    I7 5960x
    CyroRig A80 AIO water cooler
    G.Skill Ripjaw 4 2800 32G
    Tr2 700 bronze
    Razer H440 NZXT case.
    2x HD7950 ( my old cards going to upgrade to the new GTX 1000 cards soon)

    I am not getting any Q-codes the display is not lit up at all,
    the mobo still has RGB lights lit up.
    I reinstalled my old PSU that the system was running on and it still wont boot,
    Ive tested the Corsair PSU by bridging the On wire with a Gnd wire,
    I've then checked all the power outs on the back to confirm they are all correct for the 8 pin ESP connectors and the 24 pin connector,
    Ive also checked all the ESP cables with a meter to confirm the pin outs are correct.
    There is a burnt smell from the PSU but all the connections appear to be in the correct voltage range ( I had 4 fans plugged in for a load when testing)
    Ive removed and inspected the socket for bent pins, re seated the CPU and reattached the AIO watercooler,
    Ive changed out the GPUs for a know good one ( an old HD6770)

    Any Ideas on what to do next?
    Last edited by maxjkt; 07-22-2016 at 03:32 AM.

  2. #2
    ROG Guru: Brown Belt Array MeanMachine PC Specs
    MeanMachine PC Specs
    Laptop (Model)I enjoy my wife
    MotherboardCVI HERO + CVII Hero Wifi
    ProcessorRyzen 7 1800X + 2700X
    Memory (part number)CMD16GX4M2B3000C15 + F4-3200C14D-16GTZR
    Graphics Card #1EVGA GTX980 SC for CVFZ
    Graphics Card #2EVGA GTX 1080 hybrid
    Graphics Card #3GTX 770 for phys x
    Sound CardMB
    MonitorHP w2408h
    Storage #1Samsung 970 EVO 500GB M.2
    Storage #2Samsung 840EVO 500GB and 960 M.2 pro
    CPU CoolerCorsair H105, H110 and H115i
    CaseCorsair 750D and 780T
    Power SupplyCorsair AX-1200i and Antec 850 pro platinum
    Keyboard Logitech K800
    Mouse Razer Mamba
    Headset Corsair Vengeance 2100
    OS W7 Ultimate 64bit and W10 pro 64bit
    Network RouterNetcom Wireless NF18ACV
    MeanMachine's Avatar
    Join Date
    Apr 2014

    If you have a burnt smell coming from the PSU then chances are high that its toast.
    You need an efficient PSU of good quality for your setup.

    Don't risk any further damage and swap it out with a working unit of similar or higher Wattage.
    If you decide to get a new PSU get a Seasonic or EVGA at 850W gold or Platinum certified.
    Ah I see you have Corsair RM1000i. normally a good unit but with all PSUs they can fail. RMA the unit.
    Last edited by MeanMachine; 07-22-2016 at 04:21 AM.
    We owe our existence to the scum of the earth, Cyanobacteria

    My System Specs:

    MB:ASUS ROG Crosshair VII Hero/WiFi GPU:EVGA GTX 1080 sc PSU:Corsair AX-1200i
    AMD R7 2700X Cooler: Corsair Hydro H115i Case: Corsair Carbide 780t

    Memory:G.Skill TridentZ F4-3200C14D-16GTZR SSD:Samsung 500GB 960 EVO M.2

  3. #3
    Moderator Array
    Join Date
    Jun 2016

    There is a minor opportunity that your motherboard may have survived. Try the following to restart Intel ME (Management Engine) to see if this bring life back to your board:

    1. Change back to your old PSU
    2. Remove AC power cord
    3. Hold the power button till no LED on the board remain lid.
    4. Remove CMOS battery
    5. Clear CMOS for 10 seconds.
    6. Place the CMOS battery back to the board.
    7. Reconnect AC power cord

    You may need to service the board if you still see no sign of life after this point.

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