PC will not turn on

By SteelDrake ยท 16 replies
Oct 29, 2009
  1. So, as far as I know, my computer's been out of power since the Monday before last. I got a new PSU today, I plugged it all in, and pressed the power button.

    Nothing happens.

    A light on the mobo is lit, which means power IS running through.

    I've already ruled out a couple of things.
    1. PSU, it's new, so i would suspect that it isn't bad.
    2. Connections, I triple-checked the connections, and I even switched the power cables on the DVD burner and HDD's.
    3. I checked the power button connections, and even went as far as pulling the face plate OFF and pressing the button.

    Also, my computer is really dirty, and 5+ years old.

    E-Machines T3830
    Intel Celeron D, 2.4 GHz
    1Gb of RAM
    2 HDD's, 80Gb + 100Gb
    Creative Sound Blaster Audigy
    EVGA e-Geforce 8400 GS 512Mb Gfx card
    BFG 450w ATX12V 2.2 PSU

    I've done everything I could possibly think of.
    I'm currently on my Wii writing this post. And I'm sick and tired of it.
  2. kimsland

    kimsland Ex-TechSpotter Posts: 14,523

    Sounds as though your computer needs a good clean
    You can use high compressed air to blow out all the dust (outside preferably ;))
    You can purchased compressed air cans from most hardware or electronic/computer shops

    The new PSU may be basically faulty, if the old one still works, plug that in and test
  3. SteelDrake

    SteelDrake TS Rookie Topic Starter

    Well, I gave it a good clean with a compressed air can, and it still won't turn on.
    Thinking of buying a new computer...

    And I'm positive the old one's dead.
  4. elkhin

    elkhin TS Rookie

    hmmm. try to clean you PC by removing all the parts like video & audio card the cooling fan also then blow some compressed air then put it all back and reset the BIOS of your PC then plug all the power source then turn ON.
  5. kimsland

    kimsland Ex-TechSpotter Posts: 14,523

  6. elroacho72

    elroacho72 TS Rookie Posts: 116

    Try replacing the battery on the mother board.Hope this helped
  7. SteelDrake

    SteelDrake TS Rookie Topic Starter

    I've tried everything that the No POST link said,
    still nothing...

    Tomorrow, I'm going to replace the coin battery in the mobo.
  8. elroacho72

    elroacho72 TS Rookie Posts: 116

    Someone just gave me a AMD2 4000x2 Motherboard with ram and cpu after hours of messing with the thing I was about to go to bed and figured it was trash but thinking there is one last thing I know to try without pulling the board out to make sure you don't have a screw between the board and case. Replacing the bat worked and I went to bed.Let me know if it helped you. Thanks
  9. SteelDrake

    SteelDrake TS Rookie Topic Starter

    I've just about given up.

    Still nothing.

    I'm gonna see if I can contact one of my other geek friends to see if he can help me.
    If not, then I guess I'm gonna get a new computer and sell the parts out of the old one.
  10. kimsland

    kimsland Ex-TechSpotter Posts: 14,523

    I still think it may be PSU
    But sadly this could be a faulty Motherboard itself

    Let us know what your "geek friends" suggests
  11. angelic00

    angelic00 TS Rookie Posts: 35

    Eww @ eMachine...

    but, It sounds as though your case isn't connected to the motherboard properly to me. Check the wiring from the case to the motherboard and make sure it's nice and secure.

    If that doesn't help, I would suggest going ahead and buying a new computer IF you have the money... If you do buy a new computer, custom build it by hand -- they always turn out the best when you build them.

    Good luck.

    P.S. Don't buy an eMachine if you buy another premade machine.
  12. SteelDrake

    SteelDrake TS Rookie Topic Starter

    I know, dad made a bad decision when he bought a computer for my mother.

    I double-checked the wires from the case, and I examined a chart on the motherboard.
    Pins are counted like this, right?

    1 3 5 7 9
    2 4 6 8 10

    The table says:
    HD LED - 1-3
    PWR LED - 2-4
    RESET - 5-7
    PWR S/W - 6-8

    So, it should look like this:
    x x o o
    x x x x o

  13. kimsland

    kimsland Ex-TechSpotter Posts: 14,523

    Isn't it just one big block that you plug in?
    ie You can't get this wrong, all the front wires go into one connector that you plug into the Motherboard

    If you want to confirm the front connector plug is not at fault, unplug it
    Then using a screw driver short the "PWR S/W" pins (for a second or two) and see if it turns on (the LEDs and Reset don't matter)
  14. elroacho72

    elroacho72 TS Rookie Posts: 116

    Did you guys get it working?
  15. SteelDrake

    SteelDrake TS Rookie Topic Starter

    Mine are 3 separate plugs.

    I want to make sure that I'm doing this correctly; would I put the screwdriver between the pins and touch them?
  16. elroacho72

    elroacho72 TS Rookie Posts: 116

    Have a good light so you can see with ones you touch Start at one end and work your way to the other and when it starts up thats you power .Sometimes they put a little diagram on the board or if to can get the computers manual it tells you were they go.
  17. kimsland

    kimsland Ex-TechSpotter Posts: 14,523

    You mean:
    1 for Sata
    1 for Audio

    and the other big one for PWR RST LEDs
    I'm talking about the plug that goes to that one! That you asked where do they go? And I said you can't get it wrong!

    "Then using a screw driver short the "PWR S/W" pins"
    Yes "Short" means touch with the end of the screw driver, and in case you ask which pins. The "PWR S/W - 6-8" (as you stated is printed on the board)

    So after asking this a few posts ago, how did it go?
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