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PC Beeps 3 times and wont start up

post #1 of 73
Thread Starter 
Sorry I didn't know where else to put this thread.

Ok so basically I tried to upgrade my younger brothers computer by adding a 1GB stick of RAM. The RAM it had before was 1GB DDR2 but I think the MHz was different.

When I tried to boot it up after adding the second stick, the pc would not turn on, but instead beep 3 times slowly and kinda delayed, pause for a few seconds and repeat. The display does not come on at all. I did ground myself before opening the PC and did it all on a laminated floor. I hardly even touched the motherboard.

What could be the cause of this?

Thanks.

EDIT: It's more like 3 beeps with medium sized intervals in between, then a constant beep every 1.5~ seconds.
Edited by Rawrasaurus - 4/15/11 at 6:08am
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post #2 of 73
Well, check the manual for the motherboard, the codes will be explained there.

Did you try taking the stick out and booting again?
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post #3 of 73
Thread Starter 
Quote:
Originally Posted by n1helix;13135449 
Well, check the manual for the motherboard, the codes will be explained there.

Did you try taking the stick out and booting again?

I just tried that, the RAM is definitely in properly. I will see if I can find a manual.
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post #4 of 73
reset cmos
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post #5 of 73
Yeah, it sounds like a bust Stick O Ram,

Take one out and reboot, if still not working, replace the ram and remove the other stick, this should identify which stick is faulty, its usually best to buy ram as a whole, or to make sure the timings and speed are identical, (usually by buying the same brand)

keep us up to date.
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post #6 of 73
Thread Starter 
Quote:
Originally Posted by subliminally incorrect;13135520 
reset cmos

I'm not sure how to do that redface.gif

edit: read up.. I'll give it a shot
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post #7 of 73
Thread Starter 
Quote:
Originally Posted by ChosenLord;13135529 
Yeah, it sounds like a bust Stick O Ram,

Take one out and reboot, if still not working, replace the ram and remove the other stick, this should identify which stick is faulty, its usually best to buy ram as a whole, or to make sure the timings and speed are identical, (usually by buying the same brand)

keep us up to date.

I took out the stick I tried to additionally add, so I am left with just the original stick. I am going to try and reset cmos now, I'll let you know how it goes.
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post #8 of 73
Thread Starter 
Ok so there is no CMOS reset button on my mobo, the battery seems to be irremovable (atleast from my efforts). I see the CMOS jumper reset, is it just 2 prongs? If so, what do I do with it?

Thanks.
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post #9 of 73
Quote:
Originally Posted by Rawrasaurus;13135668 
Ok so there is no CMOS reset button on my mobo, the battery seems to be irremovable (atleast from my efforts). I see the CMOS jumper reset, is it just 2 prongs? If so, what do I do with it?

Thanks.


while the machine is off.

remove the jumper. then power on machine.


press the power button several times.


the replace the jumper.
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post #10 of 73
If there is no jumper on the pins then:

With the PC off, short the pins with something conductive like a screwdriver.

You only need to short them for a few seconds. After that you can try booting again.
Edited by n1helix - 4/15/11 at 8:02am
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