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Sb pwr light keeps on / one beep and the PC turns off

I cannot turn on my Desktop (it has not been used for a couple of years). Once i connect it, the fans start working, and its beggins to work, but then a beep alarm sounds, and the pc turns off. And the sb pwr light keeps on... Anyone knows what this might be? I've tried to clean it all inside the best I can, I've unplugged and plugged back all the cables, and I've changed the location of the RAM card (as I read that one beep could be relate to that). But so far nothing... Thanks in advance

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  • Contributor
  • 54 Answers

Check that keyboard is plugged into correct port.
Can you Enter CMOS setup ? Try replacing battery on main board.

Posted on Oct 22, 2013

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SOURCE: Orange Light permanently on motherboard. PC won't start

1. motherboards for atx form factor pc's are powered even when the computer is off, particularly if you leave the computer plugged in to wall outlet... you better do not work on you computer while power cable is still connected to both, your pc and the wall outlet..

2. I found this thread that may be helpful, it may be the motherboard may have gone bad, cmos is corrupted or something may not be seated properly...it could also be one of these: Bad CPU, BAD ram, Bad power supply.. read the thread for details:
http://www.dellcommunity.com/supportforums/board/message?board.id=oplex_other&message.id=23925&c=us&l=en&cs=&s=gen

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SOURCE: Scaleo P Does not Start up, No Fan, No Boot Up Nothing at All

something is shorted or PSU has failed

make sure cards are seated down (with power cord out)

try if works ;) your good

if not next step is cord out an remove power and cable off the CDROM drive

try it, just go through all hardware till it starts
to determin what failed, if still same no boot then PSU has died

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SOURCE: Sony VAIO RB30C (VGCRB30) PC Desktop Won't Turn On After reinstalling ram

Unplug the tower

Remove the ram and turn the tower on wait till it give you fast beeps. (telling you no RAM)

once that happens shut the system down by unplugging it again

Re-install your RAM and try to boot again

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SOURCE: PC STARTS BUT NO VIDEO SIGNAL IS PRESENT AT THE MONITOR

i was wondering if this person helped you

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SOURCE: Dell Inspiron 531 (desktop) won?t turn on/boot

You've either got a bad motherboard or a bad processor (I'd lean to the motherboard being bad). I would honestly take this into a computer repair shop and have them check both.

Posted on Oct 22, 2009

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and here is a page of pictures of this model board to compare to youre to make sure it is the same board:

http://support.intel.com/support/motherboards/desktop/d850gb/sb/CS-013238.htm



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