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Computer beeping when loading windows

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by tom.m.johnson

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Hi guys, apologies for starting my membership with a question.

Long story short, my computer is making a continuous alternating high/low system beep when it tries to load windows before turning itself off.

This seems to be listed on the web as CPU-related, typically overheating, but it is not overheating, and is getting all the way through POST, windows preload, welcome screen, but crashes somewhere around the welcome screen / starting up the windows desktop.

Has me buggered, short of replacing mobo and CPU and hoping it wasn't just a software problem.

The motherboard is a gigabyte GA-7VT600. CPU is a Sempron 2600+.

Began happening this morning after cleaning PSU fan as it made a horrible grinding noise. Seems coincidental but I don't think it's related... the fan is working fine, voltages are fine...

Any ideas or tips would be greatly appreciated.
Thanks,
Tom

5 replies

by ken

I've had a CPU fan "unsnap" (the style that has 4 plastic pushpins) from the motherboard while moving the computer. The case and motherboard flex so the snaps came out. The computer would do a thermal shutdown shortly after booting up.
What my fan looked like: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3302824&CatId=493
If that isn't the issue then try another power supply. They are fairly standard. You might have the right voltages but it can't supply enough current. If you don't have a spare power supply then unplug any unnecessary drives (DVD, CD, non boot drives) to decrease the power demand

by oh smeg

These different Alarms can be set in BIOS for different things but the most common things are the CPU Temp and Fan Speeds. If a Fan is below speed or failed completely you will hear an alarm sound from the time that the POST Screen appears.

To find out what is happening you need to look in the BIOS under Hardware Management to see what is going on there with the different System Devices.

If that isn't the problem the next thing is that the 3 Volt Rail is low so the CPU isn't receiving enough power to run it correctly. In some cases the 3 Volt Rail can go high and if it's not fixed Immediately the CPU will get burnt out. Most people see replacing the Power Supply as a cheaper option to a CPU and Power Supply and possibly a M'Board as well.

If you have opened the Power Supply up it's a very good idea to scrap it and fit a new one to your system. That way you at least know you have a new one which should be working correctly.

Also here in AU all Power Supplies have a seal on them to prevent opening them this is a requirement of the Electrical Authorities here, if the seal has been broken the device isn't legal to use under AU Law so it's probably better to swap it out as they are cheap.

You can buy a cheap unbranded PS for about $34.00 AU and a good one like an Antec one will cost you about $120.00 AU but they do start at the $65.00 AU mark and work up to a lot more.

Col

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