Computer Will Not Boot

By Daz'n'Ash ·
I have a computer given to me that has a mysterious issue. Try to boot, no post beep, black screen nothing to be seen at all, not even a flicker. I was told by the previous owner that all they did was to plug in a printer to USB port at the back, tried to install using proper driver, then the computer locked up and was unresponsive. The reset button was pressed and from that point, nothing but black screen. All the fans and hard drive spin.

Have tried:
New powwer supply
clearing the CMOS
reseating the RAM and CPU
new RAM

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All Answers

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Have you tried

by NexS In reply to Computer Will Not Boot

Another monitor?
Another video card?

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Have you tried

by OH Smeg Moderator In reply to Computer Will Not Boot

Replacing the BIOS Battery?

When they go below 3 V DC they can cause the system to hang and become unresponsive.

If that does nothing try reseating any Plug In Cards particularly any Video Cards and double check the ATX Connectors. Especially any Supplementary 12 V DC Plugs on the M'Board.


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Check the Capacitors

by dmolter In reply to Have you tried

How old is the mo-board?
I've seen many board that run hot and shorten the life of the components on the board. The easiest tell-tale sign is bulging, split or leaking electrolytic caps that are usually near the CPU. They are generally 1000uf~3300uf. If they're bad, the board is toast. It will power up, but the CPU won't respond.

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If it walks like a duck, and quacks like a duck...

by robo_dev In reply to Computer Will Not Boot

For whatever reason, plugging the USB cable into the system killed the motherboard.

If you:

- clear/reset the bios
-unplug everything except the processor (including memory)
- remove the motherboard from the case
- plug in the power supply and short the power pins on the mobo.

If the motherboard does not start giving you beep codes at this point, it is a dead duck. Some mobos also have a status LED on the board itself that should go green.

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"all they did was"

by The 'G-Man.' In reply to Computer Will Not Boot

(Metal Gear Solid Spotted Noise)

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Well as I saw this in Brisbane Today

by OH Smeg Moderator In reply to Computer Will Not Boot

Have you looked at the M'Board?

I pulled the cover off a desktop where the user had plugged in a USB Printer and didn't bother going any further. There as a big black mark on the M'Board that had taken out one of the 2 USB Controllers. Seems that they had a shorted USB Lead and the moment that they plugged it in they blew that USB Channel.


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RE: Well as I saw this in Brisbane Today

by Daz'n'Ash In reply to Well as I saw this in Bri ...

Yep, Have seen that happen before. However, that is not the problem here. Looks like the board is dead. I will try a different CPU to be sure, but I don't hold much hope for it.

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by prrethish In reply to Computer Will Not Boot

Remove all u r connections except keyboard & monitor
also remove the reset & power switch connection from the case to the mother board
try power on the system manually by shorting the power on switch in the mother board

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by Daz'n'Ash In reply to TRY THIS

Yep, did that. I think it is time to give up. The board is dead. Thanks to all for your help :)

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For future reference and diagnostic testing !!

by offtherails2010 In reply to RE: TRY THIS

See if you can order this motherboard diagnostic tester card, it helps me quite alot and saves time with alot of tedius trial and error tries of different components!


hopefuly they will deliver to you !

Please let me know if this is helpful to you, many thanks! enjoy!

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