pc keeps turning off

Discussion in 'Desktop & Laptop Computers Forum' started by vince_vega, May 6, 2007.

  1. vince_vega

    vince_vega
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    hi guys, i am having a spot of bother with my pc and was wondering if you lot had any advice? my pc keeps just turning off but the power led and bluetooth dongle stay on. There is no pattern to this it just does it randomley. It was doing it a few months ago but it stopped and everything was ok and it came back with a vengeance! sometimes it wont get past the post screen at all and other times it takes 5-10 mins to go off but all the while all the leds are on and i can only turn off the power by flicking the switch on the psu???????:eek: i would say it has done it 3 times for about a week at a time and was then fine for about 3 months! i just dont understand it at all:lease: hellllllp! i have done the usual spyware and virus scans and my temps are fine too.
     
  2. Keyman

    Keyman
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    A full description on parts may help, especially makes of components too.

    4 main suspects.
    1. Software
    2. PSU
    3. Motherboard
    4. Ram
     
  3. vince_vega

    vince_vega
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    1. vista home premium
    2. hiper type r 580 watt
    3. mobo is an asus but i cant remember which
    4. 2gb of pc3200 pny i think
     
  4. Stompy

    Stompy
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    I had the exact same problem (power light stays on but system is powered off), and it was a power supply issue. I replaced the power supply and all was well. The PSU you have is a decent one but it could be a dodgy one off.

    Do you have access to another PSU you could use to test the system?
     
  5. Keyman

    Keyman
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    My guess in order of most likely suspect:
    1. PSUs
    2. MB

    Hiper is more of a after market brand which is not high volume produced like other industrial core types. Although maybe high in spec, but may suffer a higher than average failure/problem.

    Asus MB has really picked up a higher than regular failure rates within the last 2 years, so much that our company has stop selling them.

    If your RAM is of a good brand, then should be OK.

    Obviously it can also be corrupted windows or bad HD etc.......
     
  6. Tejstar

    Tejstar
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    Make sure you haven't got an bad caps on your mobo. If not, the most likely scenario is a PSU problem. I had the same faults recently and a new PSU fixed it!
     
  7. Fe+

    Fe+
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    suspected main culprit

    hiper type r psu's have a bit of a reputation unfortunately

    any chance of testing with an alternate psu?
     
  8. Mickey G

    Mickey G
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    check the CPU temperature in the bios is within it's allowed range.
     
  9. Tejstar

    Tejstar
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    I use SpeedFan where you can get it to monitor and record your CPU temps. If it then switches off, you can go back and see what the temp was before it switched off.
     

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