Question about CORSAIR Builder CX500 (CMPSU500CX) 500-Watt Power Supply

1 Answer

First boot up works fine, then 5 minutes later.. the pc turns off instantly (no blue screen) reboots for about 5 seconds then turns off again, then boots up for half a second then doesn't reboot at all. I would have to turn the psu switch off, wait an hour then and on again, then the whole process is repeated. I have had the pc for 2 months and it worked fine up until 1 week ago when it failed. i don't believe the psu is faulty because it shouldn't of worked from day 1 if it was. I believe the psu is more than sufficient for the system because it was designed like that by the company, whom i bought it from. intel quad core i5, overclocked 4500k radeon HD 6850 cyclone, 2 usb devices, 3 fans including cpu, 1 dvd drive, 1 hard drive. 2 x 4gb(2x2) mushkin enhanced ddr3.

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  • rob_asquith May 21, 2011

    I tried every connection inside the pc, removed and re-inserted every power cable. still no change
    I also tried an experiment, i completely removed the psu from my new pc and crudely rigged it up to power my old pc (which requires a lot less power because it has a 350w supply). the psu re-acted the same way to my old pc, just took longer to cut out, about 30 minutes.
    the psu fan works fine..
    how do i test for faulty leads?

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Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up a computer hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your "((MOTHERBOARD TO THE HARD DRIVE))" make sure they have a secure connection and are not faulty or just replace them they could be faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they could be faulty a computer needs its connections to continue its cycle and have an end so any faulty leads will end up with a computer error hope this helps

Posted on May 21, 2011

  • Brian Sullivan
    Brian Sullivan May 21, 2011

    is the hard drive IDE or SATA if its IDE replace the 40 pin flat IDE lead this is usually the first to fail even something as small as an electrical extension or a faulty fan lead can cause this problem make sure the connections are good and dust free a computer must continue its cycle and have an end to function which means the imformation must travel through all of your devices and finally finish follow this troubleshooting procedure
    hope this helps

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