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PC turns on then off in about a second

hello, I'm not sure if this is the right sub-forum so I'm sorry if i should have posted somewhere else, so the problem is that the PC turns on for a second then shuts off immediately and in about 4 more seconds repeats the process
it has done that out of the blue without me installing any new hardware, it was working alright then next day i tried to boot it up and this happened
please note than this has happened twice before , with both times i went to a guy to fix it who did fix it and promised it'd work for years without the problem happening again and when i asked him about the problem he said (and I'm translating from our language) that there was some excess electricity thing , he fixed it both times in about 20 minutes or less
thanks in advance :D
EDIT : please note that i tried unplugging everything except the CPU but the problem still exists
5 answers Last reply Best Answer
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  1. Id be very wary of someone who says your PC wouldnt boot due to "some excess electricity thing". Most likely your PSU needs to be replaced.
  2. well i think it was that he didn't want me to know the problem in detail lol , and the last time this happened before i took it to the guy who fixed it, i took it to a few before him , none could solve the problem, but one of them actually replaced the PSU and it didn't work , so i think it'll be the same this time
  3. anybody ?
  4. Best answer
    i had this problem a few times, it was my bios that had some error, so i actually just unplugged everything, removed the battery (on the mother board) let the computer rest for like 2 minutes so settings etc resets, and then put the battery in again and plug everything back in.
    No clue how it happend and why, but after just removing the battery it suddenly worked.
    Might be worth a try :)
  5. daboo said:
    i had this problem a few times, it was my bios that had some error, so i actually just unplugged everything, removed the battery (on the mother board) let the computer rest for like 2 minutes so settings etc resets, and then put the battery in again and plug everything back in.
    No clue how it happend and why, but after just removing the battery it suddenly worked.
    Might be worth a try :)


    wow this actually worked !
    thanks man i really needed it up ASAP :)
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