Page 1 of 2 12 LastLast
Results 1 to 16 of 19

Thread: Suddenly PC wont POST - Tried the usual suspects now what?

  1. #1
    aqil
    Guest

    Suddenly PC wont POST - Tried the usual suspects now what?

    My PC has been running fine for the past 4 months until yesterday. It had been connected to an LCD TV for a few days so I shut it down, switched DVI cables back to my LCD monitor, turned it on and no POST.

    The motherboard LED lights up, case and CPU fans spin but no activity from the monitor and no POST. Connected a motherboard speaker and no beeps. Just to test if the motherboard beeped I took out all the RAM and it beeped like it should. Does this mean the motherboard is OK?

    I have tried unplugging the sound and graphics card, hard drives & CD (CPU & RAM only) and booted up and still no POST

    I have taken out the battery and cleared the CMOS and just now reseated the CPU and still nothing

    Any ideas what could be wrong? I bought all the parts back in November from Scan so I guess if anythings faulty I am covered by warranty but how do isolate the problem.

    Heres a component list if there are any known issues

    Intel Q6600 GO
    Scythe Mine Cooler
    Asus P5E
    2x Crucial Ballistix 1GB PC2-8500
    WD Raptor 75GB

    Any help appreciated.

  2. #2
    That spy is a spy!
    Join Date
    Feb 2008
    Location
    Rochdale
    Posts
    282
    Thanks
    69
    Thanked
    5 times in 5 posts
    • AndrewJ's system
      • Motherboard:
      • Abit Ip35 Pro
      • CPU:
      • Intel Q6600 @ 3.6GHZ ( Scythe Mini Ninja)
      • Memory:
      • 4GB Corsair XMS2 800mhz
      • Storage:
      • 250GB WD SATA 2
      • Graphics card(s):
      • XFX 8800GTS Alpha Dog XXX 512MB
      • PSU:
      • Corsair HX620
      • Case:
      • Antec 1200
      • Operating System:
      • Vista X64 Ultimate SP1
      • Monitor(s):
      • SAMSUNG 204BW
      • Internet:
      • VIRGIN MEDIA 20MB CABLE, THROUGH NETGEAR G ROUTER

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Does it work if you plug it back into the LCD TV? it could need reconfiguring to a normal monitor before you shutdown and change back.

  3. #3
    Splash
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    No beeps unless you take out the RAM? I'm looking at the RAM then to be honest. Can you test some known good memory?

  4. #4
    Mostly Me Lucio's Avatar
    Join Date
    Mar 2007
    Location
    Tring
    Posts
    5,163
    Thanks
    443
    Thanked
    448 times in 351 posts
    • Lucio's system
      • Motherboard:
      • Gigabyte GA-970A-UD3P
      • CPU:
      • AMD FX-6350 with Cooler Master Seldon 240
      • Memory:
      • 2x4GB Corsair DDR3 Vengeance
      • Storage:
      • 128GB Toshiba, 2.5" SSD, 1TB WD Blue WD10EZEX, 500GB Seagate Baracuda 7200.11
      • Graphics card(s):
      • Sapphire R9 270X 4GB
      • PSU:
      • 600W Silverstone Strider SST-ST60F
      • Case:
      • Cooler Master HAF XB
      • Operating System:
      • Windows 8.1 64Bit
      • Monitor(s):
      • Samsung 2032BW, 1680 x 1050
      • Internet:
      • 16Mb Plusnet

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Try clearing the capacitors. Unplug everything and hold down the power button for 30 seconds or so.

    (\___/) (\___/) (\___/) (\___/) (\___/) (\___/) (\___/)
    (='.'=) (='.'=) (='.'=) (='.'=) (='.'=) (='.'=) (='.'=)
    (")_(") (")_(") (")_(") (")_(") (")_(") (")_(") (")_(")


    This is bunny and friends. He is fed up waiting for everyone to help him out, and decided to help himself instead!

  5. #5
    Admin team peterb's Avatar
    Join Date
    Aug 2005
    Location
    Southampton
    Posts
    19,252
    Thanks
    2,846
    Thanked
    3,359 times in 2,659 posts
    • peterb's system
      • Motherboard:
      • Nascom 2
      • CPU:
      • Z80B
      • Memory:
      • 48K 8 bit memory on separate card
      • Storage:
      • Audio cassette tape - home built 5.25" floppy drive
      • Graphics card(s):
      • text output (composite video)
      • PSU:
      • Home built
      • Case:
      • Home built
      • Operating System:
      • Nas-sys
      • Monitor(s):
      • 12" monocrome composite video input
      • Internet:
      • No networking capability on this machine

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Quote Originally Posted by Lucio View Post
    Try clearing the capacitors. Unplug everything and hold down the power button for 30 seconds or so.

    Why??? What is the rationale behind that suggestion. given that the capacitors will discharge thyemselves pretty quickly.
    (\__/)
    (='.'=)
    (")_(")

    Been helped or just 'Like' a post? Use the Thanks button!
    My broadband speed - 750 Meganibbles/minute

  6. #6
    Splash
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Quote Originally Posted by peterb View Post
    Why??? What is the rationale behind that suggestion. given that the capacitors will discharge thyemselves pretty quickly.

    I was rather thinking the same of AndrewJ's suggestion - how is switching from an LCD TV to a TFT monitor going to stop a machine from POSTing?

  7. #7
    Admin team peterb's Avatar
    Join Date
    Aug 2005
    Location
    Southampton
    Posts
    19,252
    Thanks
    2,846
    Thanked
    3,359 times in 2,659 posts
    • peterb's system
      • Motherboard:
      • Nascom 2
      • CPU:
      • Z80B
      • Memory:
      • 48K 8 bit memory on separate card
      • Storage:
      • Audio cassette tape - home built 5.25" floppy drive
      • Graphics card(s):
      • text output (composite video)
      • PSU:
      • Home built
      • Case:
      • Home built
      • Operating System:
      • Nas-sys
      • Monitor(s):
      • 12" monocrome composite video input
      • Internet:
      • No networking capability on this machine

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Quote Originally Posted by Splash View Post
    I was rather thinking the same of AndrewJ's suggestion - how is switching from an LCD TV to a TFT monitor going to stop a machine from POSTing?
    Yes, I thought that too - definately looking like a memory problem - differential diagnosis would be PSU
    (\__/)
    (='.'=)
    (")_(")

    Been helped or just 'Like' a post? Use the Thanks button!
    My broadband speed - 750 Meganibbles/minute

  8. #8
    Splash
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    PSU is another possibility, maybe even a motherboard short.

  9. #9
    Mostly Me Lucio's Avatar
    Join Date
    Mar 2007
    Location
    Tring
    Posts
    5,163
    Thanks
    443
    Thanked
    448 times in 351 posts
    • Lucio's system
      • Motherboard:
      • Gigabyte GA-970A-UD3P
      • CPU:
      • AMD FX-6350 with Cooler Master Seldon 240
      • Memory:
      • 2x4GB Corsair DDR3 Vengeance
      • Storage:
      • 128GB Toshiba, 2.5" SSD, 1TB WD Blue WD10EZEX, 500GB Seagate Baracuda 7200.11
      • Graphics card(s):
      • Sapphire R9 270X 4GB
      • PSU:
      • 600W Silverstone Strider SST-ST60F
      • Case:
      • Cooler Master HAF XB
      • Operating System:
      • Windows 8.1 64Bit
      • Monitor(s):
      • Samsung 2032BW, 1680 x 1050
      • Internet:
      • 16Mb Plusnet

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Quote Originally Posted by peterb View Post
    Why??? What is the rationale behind that suggestion. given that the capacitors will discharge thyemselves pretty quickly.
    Silly as it sounds, I've had a fair few systems get "stuck" with a similar screen issue and after spending hours and hours looking for a solution, I tried this and it cleared it up.


    I don't understand the reason why this helps things, but it does seem to clear up issues caused by a small ripple in the power supply (for example, slightly loose power cable gets knocked, cat turned off the multi point adaptor etc). Even weirder with my g.f's PC this happened the day AFTER the multi point was turned off, despite being a couple of times having it turned off and back on.

    My rationale is that he's knocked the power lead slightly whilst changing the cabling.


    All in all, it's just a suggestion from someone who had similar symptoms on another PC and he's tried a lot of other comprehensive testing, so I thought I'd offer up a simple, but often overlooked, idea.

    (\___/) (\___/) (\___/) (\___/) (\___/) (\___/) (\___/)
    (='.'=) (='.'=) (='.'=) (='.'=) (='.'=) (='.'=) (='.'=)
    (")_(") (")_(") (")_(") (")_(") (")_(") (")_(") (")_(")


    This is bunny and friends. He is fed up waiting for everyone to help him out, and decided to help himself instead!

  10. #10
    Admin team peterb's Avatar
    Join Date
    Aug 2005
    Location
    Southampton
    Posts
    19,252
    Thanks
    2,846
    Thanked
    3,359 times in 2,659 posts
    • peterb's system
      • Motherboard:
      • Nascom 2
      • CPU:
      • Z80B
      • Memory:
      • 48K 8 bit memory on separate card
      • Storage:
      • Audio cassette tape - home built 5.25" floppy drive
      • Graphics card(s):
      • text output (composite video)
      • PSU:
      • Home built
      • Case:
      • Home built
      • Operating System:
      • Nas-sys
      • Monitor(s):
      • 12" monocrome composite video input
      • Internet:
      • No networking capability on this machine

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Ok - interresting thought - although I can't think of any technical explanation why it should work!
    (\__/)
    (='.'=)
    (")_(")

    Been helped or just 'Like' a post? Use the Thanks button!
    My broadband speed - 750 Meganibbles/minute

  11. #11
    aqil
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Thanks everyone for your replies. As I had no other parts to test with I took it to a local PC store who had some spare parts.

    First thing we tried was new RAM and guess what it POSTed.

    What are the chances of that, two 1GB Crucial Ballistix 1066 sticks dead. My question now is do I replace it with the same or does anyone have any better recommendations for my setup.


    Thanks all.

  12. #12
    Splash
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    The Ballistix is a decent range, and as you mentioned earlier that it's under warranty I'd just get it RMAd and replaced.

    What PSU are you using out of interest? And were you overclocking (not that you should be pushing that RAM with a Q6600 overclock unless it was something crazy...)?

  13. #13
    aqil
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    I have the Corsair HX520W PSU. Have not overclocked it, still amazed by the stock speeds.

    Curious about your comment on overclocking, you mean if I was to overclock I would not need to push the RAM any further?

    Thanks

  14. #14
    Splash
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    There's a lot of overhead in that RAM - you could overclock your CPU (theoretically) quite some way without having to overclock your RAM. If running at stock you may have paid a little more than you needed to for something that you're not going to get full use of.

  15. #15
    aqil
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Thanks Splash for your insight. I do plan to overclock and have been researching the subject.

    I had some experience overclocking my old system (P4 Northwood & an Asus P4P800) however it was somewhat easier as it just had the option to overclock in increments of 10, 20 and 30% which took care of all the settings.

    Are there any recent overclocking guides you are aware of which are based on my specs e.g Q6600 & 1066 RAM which I can read up on.


    Thanks

  16. #16
    Splash
    Guest

    Re: Suddenly PC wont POST - Tried the usual suspects now what?

    Clunk put together a VERY comprehensive guide to overclocking the C2D/C2Q - I believe it's stickied somewhere.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. No post issue
    By DiamondGeezer in forum Help! Quick Relief From Tech Headaches
    Replies: 10
    Last Post: 17-11-2015, 05:09 AM
  2. Ageia PhysX
    By jonny4288 in forum SCAN.care@HEXUS
    Replies: 56
    Last Post: 12-04-2006, 09:55 AM
  3. NF7 no post problem
    By Ceefer in forum PC Hardware and Components
    Replies: 10
    Last Post: 29-10-2003, 04:26 PM
  4. Replies: 15
    Last Post: 11-10-2003, 03:43 PM
  5. The post count/avatar thread
    By Zathras in forum General Discussion
    Replies: 39
    Last Post: 25-07-2003, 08:38 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
  •