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Old 09-23-2008, 04:08 PM
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Default PC won't boot up but LED light comes on

Hi everybody,

I just started having this problem today and I'm not quite sure what's going on. When I try to start my pc, only the front LED light comes on accompanied with a high pitch sound. There is no other action (no fan, no whirring, nada). Looking at other boards, many people said it may be a power supply issue. But changing the power supply did not fix the problem. Also, I found that when I just plug in the power cord, the high pitch sound begins to emit immediately. This is an older computer, 6 years old, and was not custom built. Any ideas?
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Old 09-24-2008, 01:02 AM
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You know that BEEEP you get when you start up? That's from the POST, the Power On Self Test. It happens very early in the bootup cycle. While the computer is testing the motherboard, before it gets to the peripherals.

No beep = FUBAR motherboard. Mama ain't happy, nobodies happy. Last time that happened to me, it was the result of a lightning strike.
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Old 10-21-2008, 09:11 AM
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Could be fan on CPU is not working and the motherboard is not powering up to protect the CPU. If this is the case hopefully CPU is not cooked.
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Old 11-10-2008, 10:59 AM
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I Think That Your Mother Board Get Shorted And Conductor Thing Is Touches Ur Mother board. You have Take Ur mother Board To The Professional.............
Tnx
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Old 12-29-2008, 11:40 AM
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Your motherboard is get shorted. you Have to take him to the expert........
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Old 01-01-2009, 09:34 PM
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Is the high pitched sound a beep from the PC speaker (motherboard speaker)?

Is there a certain code to the beeps? One short beep like Mark said is a successful POST. Other combinations of short and long beeps may tell you the problem. Depending on your BIOS manufacturer, the beeps will be different for different problems. You can look them up at places like:

PC Hell: BIOS Error Beep Codes
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