Results 1 to 9 of 9

Thread: Pc turning on via motherboard but switching off via front power switch :(

  1. #1
    Member
    Join Date
    Sep 2005
    Posts
    175
    Thanks
    1
    Thanked
    0 times in 0 posts

    Pc turning on via motherboard but switching off via front power switch :(

    Ok this evening my PC decided it had enough with the world and turned itself off.

    The specs are Antec p90 case, Tagan 600W dual-engine PSU, i7 920, Asus P6T MB, 6GB Corsair XMS (3 sticks), H50 Corsair cooler & GTX260 Geoforce. Yes not bleeding edge but has done well for me over the past 18-22 months.

    I've tried a few things to narrow down the issue & I'm now at the point where the only stuff in the case is the PSU, CPU and CPU HSF. The front power switch will only bring the machine on for something like a second tops then it all powers down. If I use the switch on the MB the MB does seem to power up along with the HSF (I can hear the pump and sloshing water noise).

    Where now? If it had been a sticking power button then it would have been more than 1 second. I'm beginning to think I have a failed CPU here (even though I've not been heavily OC'ing). Anyone any ideas where to go next? I have a 480 Watt PSU in another case in the house that I could try next hopefully. Any ideas why the MB is powering up but the front panel isn't?

    Thanks

  2. #2
    Anthropomorphic Personification shaithis's Avatar
    Join Date
    Apr 2004
    Location
    The Last Aerie
    Posts
    10,836
    Thanks
    645
    Thanked
    871 times in 735 posts
    • shaithis's system
      • Motherboard:
      • Asus P8Z77 WS
      • CPU:
      • i7 3770k @ 4.5GHz
      • Memory:
      • 32GB HyperX 1866
      • Storage:
      • Lots!
      • Graphics card(s):
      • Sapphire Fury X
      • PSU:
      • Corsair HX850
      • Case:
      • Corsair 600T (White)
      • Operating System:
      • Windows 10 x64
      • Monitor(s):
      • 2 x Dell 3007
      • Internet:
      • Zen 80Mb Fibre

    Re: Pc turning on via motherboard but switching off via front power switch :(

    Try the other PSU first, its the more likely culprit anyway.
    Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
    HTPC: AsRock Z77 Pro 4 / 3770K@4.2GHz / 24GB / GTX 1080 / SST-LC20 / Antec TP-550 / Hisense 65k5510 4K TV / HTC Vive / 2 x 240GB SSD + 12TB HDD Space / Race Seat / Logitech G29 / Win 10 Pro
    HTPC2: Asus AM1I-A / 5150 / 4GB / Corsair Force 3 240GB / Silverstone SST-ML05B + ST30SF / Samsung UE60H6200 TV / Windows 10 Pro
    Spare/Loaner: Gigabyte EX58-UD5 / i950 / 12GB / HD7870 / Corsair 300R / Silverpower 700W modular
    NAS 1: HP N40L / 12GB ECC RAM / 2 x 3TB Arrays || NAS 2: Dell PowerEdge T110 II / 24GB ECC RAM / 2 x 3TB Hybrid arrays || Network:Buffalo WZR-1166DHP w/DD-WRT + HP ProCurve 1800-24G
    Laptop: Lenovo Flex 2 / 12GB RAM / 240GB Corsair Force 3 Printer: HP CP1515n || Phone: HTC One U11 || Other: Samsung Galaxy Tab 4 Pro 10.1 CM12.1 / Playstation 4 + G29 + 2TB Hybrid drive

  3. #3
    Member
    Join Date
    Sep 2005
    Posts
    175
    Thanks
    1
    Thanked
    0 times in 0 posts

    Re: Pc turning on via motherboard but switching off via front power switch :(

    Ok just tried another PSU and it doing the same....

    As the MB seems to be turning on could this be a CPU failure?

  4. #4
    Member
    Join Date
    Sep 2005
    Posts
    175
    Thanks
    1
    Thanked
    0 times in 0 posts

    Re: Pc turning on via motherboard but switching off via front power switch :(

    Tried paper clip on power supply with loading to single fan - all ok. Confirms that PSU is ok. Also I've found that if I hold the case power switch button down for a second the power supply will power on and the H50 starts. No boot though and Inserted the grpahics card to see if I got any post message. Nothing.

    I've made no recent changes - So I'm guessing I've either got a broken MB or CPU. Any usggestions how I isolate or any way to check?

  5. #5
    Anthropomorphic Personification shaithis's Avatar
    Join Date
    Apr 2004
    Location
    The Last Aerie
    Posts
    10,836
    Thanks
    645
    Thanked
    871 times in 735 posts
    • shaithis's system
      • Motherboard:
      • Asus P8Z77 WS
      • CPU:
      • i7 3770k @ 4.5GHz
      • Memory:
      • 32GB HyperX 1866
      • Storage:
      • Lots!
      • Graphics card(s):
      • Sapphire Fury X
      • PSU:
      • Corsair HX850
      • Case:
      • Corsair 600T (White)
      • Operating System:
      • Windows 10 x64
      • Monitor(s):
      • 2 x Dell 3007
      • Internet:
      • Zen 80Mb Fibre

    Re: Pc turning on via motherboard but switching off via front power switch :(

    Well, if it's not the PSU, I would suspect the mobo, if it was CPU I would expect some kind of power-up, if only with a lot of beeping from the PC speaker.....but no real way to know for sure without swapping parts.
    Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
    HTPC: AsRock Z77 Pro 4 / 3770K@4.2GHz / 24GB / GTX 1080 / SST-LC20 / Antec TP-550 / Hisense 65k5510 4K TV / HTC Vive / 2 x 240GB SSD + 12TB HDD Space / Race Seat / Logitech G29 / Win 10 Pro
    HTPC2: Asus AM1I-A / 5150 / 4GB / Corsair Force 3 240GB / Silverstone SST-ML05B + ST30SF / Samsung UE60H6200 TV / Windows 10 Pro
    Spare/Loaner: Gigabyte EX58-UD5 / i950 / 12GB / HD7870 / Corsair 300R / Silverpower 700W modular
    NAS 1: HP N40L / 12GB ECC RAM / 2 x 3TB Arrays || NAS 2: Dell PowerEdge T110 II / 24GB ECC RAM / 2 x 3TB Hybrid arrays || Network:Buffalo WZR-1166DHP w/DD-WRT + HP ProCurve 1800-24G
    Laptop: Lenovo Flex 2 / 12GB RAM / 240GB Corsair Force 3 Printer: HP CP1515n || Phone: HTC One U11 || Other: Samsung Galaxy Tab 4 Pro 10.1 CM12.1 / Playstation 4 + G29 + 2TB Hybrid drive

  6. Received thanks from:

    cheechy (20-07-2011)

  7. #6
    Member
    Join Date
    Sep 2005
    Posts
    175
    Thanks
    1
    Thanked
    0 times in 0 posts

    Re: Pc turning on via motherboard but switching off via front power switch :(

    Yup thanks you've kinda confirmed my thought process was just wanting to make sure I hadn't missed anything obvious. New 1366 board it is then!

    Cheers.

  8. #7
    Registered+
    Join Date
    Jul 2011
    Posts
    20
    Thanks
    0
    Thanked
    1 time in 1 post

    Re: Pc turning on via motherboard but switching off via front power switch :(

    try shorting the two pins for the front panel switch using a screwdriver or similar, just to check whether it's the switch itself

  9. #8
    Member
    Join Date
    Sep 2005
    Posts
    175
    Thanks
    1
    Thanked
    0 times in 0 posts

    Re: Pc turning on via motherboard but switching off via front power switch :(

    Hi - should have posted to say that it was in fact the MB but I also replaced the PSU as I'm guessing the underpowered unit may have caused the MB to go in the first place!

    Cheers.

  10. #9
    Registered+
    Join Date
    Dec 2007
    Posts
    60
    Thanks
    0
    Thanked
    6 times in 6 posts
    • oddjob's system
      • Motherboard:
      • asus m4a785td-v evo
      • CPU:
      • am3 quad core
      • Memory:
      • 6gb
      • Storage:
      • 6tb
      • PSU:
      • enermax 350w
      • Case:
      • nzxt beta evo
      • Operating System:
      • windows 7 pro 64bit
      • Internet:
      • virgin media

    Re: Pc turning on via motherboard but switching off via front power switch :(

    did u try the mobo ou of the case but with some parts attached to see if the board was touching the case and shorting it out ? have read some other threads with similar issues and the fault disappeard when the mobo the was out of the case

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 3 port HDMI switch (automatic, no power needed) £10.99 delivered
    By koocha in forum Retail Therapy and Bargains
    Replies: 5
    Last Post: 29-06-2009, 12:55 PM
  2. Replies: 6
    Last Post: 28-11-2007, 05:41 PM
  3. Power switch cable for my 201 :(
    By BrandX in forum Chassis and Mods
    Replies: 19
    Last Post: 31-08-2006, 11:02 PM
  4. ATX12v power
    By eletero in forum Help! Quick Relief From Tech Headaches
    Replies: 3
    Last Post: 07-06-2005, 11:47 AM
  5. ATX Power Switch for ST61G4
    By visK in forum PC Hardware and Components
    Replies: 0
    Last Post: 16-12-2004, 06:20 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •