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Author Topic: PC switches off itself  (Read 2154 times)

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MICMAN888

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    PC switches off itself
    « on: July 31, 2007, 12:51:06 PM »
    I really hope someone can help me here as i am at my wits end.
    I installed a new MoBo + HDD and DVD drive , to begin with I had an error message
    "NTLDR" is missing press ctrl , alt + delete to restart. So after some advice from another post I stripped it down and re-installed everything again and hey PRESTO I no longer get the error message but my problem is that the computer still switches off after about a minute but previously before i stripped it down the computer was switching off after about 30  seconds.I don't even get a chance to install my XP O/S
    I have checked all cables and connectors are secure to no avail.The computer will start to install the O/S and then cut off after about a minute.

       Any help would be most appreciated
       Many thanks in advance
    Light travels faster than sound..that's why some people may appear bright until you hear them speak.

    beanhead07



      Hopeful
      Re: PC switches off itself
      « Reply #1 on: July 31, 2007, 12:55:09 PM »
      Reseat the memory and make sure it's in there good. Then try running a memory test to see if one of your memory modules is bad.
      If you hear beans rattling....... that means I'm thinking.

      pinewoody

      • Guest
      Re: PC switches off itself
      « Reply #2 on: July 31, 2007, 01:14:48 PM »
      The power supply could be bad.

      MICMAN888

        Topic Starter


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        Re: PC switches off itself
        « Reply #3 on: July 31, 2007, 01:56:11 PM »
        I tried removing the ram (i've got 2 sticks of 1Gig ram brand new - team elite gaming ram) and put 1 in at a time and in the different banks to no avail and the PSU is only a couple of months old.
        There was no problems with the computer switching off before the new hardware was installed.
                                   
        Light travels faster than sound..that's why some people may appear bright until you hear them speak.

        Fed

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          Re: PC switches off itself
          « Reply #4 on: July 31, 2007, 03:23:53 PM »
          Check your cpu fan, heat sink fitment & thermal paste.

          MICMAN888

            Topic Starter


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            Re: PC switches off itself
            « Reply #5 on: July 31, 2007, 05:37:15 PM »
            Check your cpu fan, heat sink fitment & thermal paste.
            just tried that and got the original message " NTLDR is missing press ctrl alt + delete to restart then it just swwitched off again so I left it switched off for about half an hour and tried switching it on again and it started the install for about 45 seconds and then switched itself off AGAIN!!!
            Light travels faster than sound..that's why some people may appear bright until you hear them speak.

            Fed

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              Re: PC switches off itself
              « Reply #6 on: July 31, 2007, 05:53:09 PM »
              Go into BIOS and check your temps, stay there for a while and see if it shuts down.

              MICMAN888

                Topic Starter


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                Re: PC switches off itself
                « Reply #7 on: July 31, 2007, 09:09:18 PM »
                Go into BIOS and check your temps, stay there for a while and see if it shuts down.
                I tried what you suggested and i have noticed that when it starts up it runs about 73 degrees and it will shut down about 96 degrees , so I think you have hit the jackpot
                the CPU is totally goosed
                Light travels faster than sound..that's why some people may appear bright until you hear them speak.

                Fed

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                  Re: PC switches off itself
                  « Reply #8 on: August 01, 2007, 12:55:17 AM »
                  Check your cpu fan, heat sink fitment & thermal paste.

                  Are those temps F or C?

                  MICMAN888

                    Topic Starter


                    Rookie

                    Re: PC switches off itself
                    « Reply #9 on: August 02, 2007, 07:55:59 PM »
                    Thanx every1 for all the advice
                    I finally stripped  the cpu out but I found that the heatsink was a bit loose so i reinstalled everything and everything is running perfect!!!!!
                    so once again cheers every1
                    Light travels faster than sound..that's why some people may appear bright until you hear them speak.

                    Fed

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                      Re: PC switches off itself
                      « Reply #10 on: August 02, 2007, 08:07:36 PM »
                      Thanks for the feedback Micman, call in anytime.