Boots to recovery console then beeps and shuts down

Hi all,

My system started coming up with an unmountable boot volume error so I decided to run recovery console and chkdsk /r as that seems to fix it.

When I boot from the XP CD the system, loads the fiirst part then  at the screen where I would press R to enter recovery console then system shuts down and emits two very low beeps followed by two more very low beeps.

I have tried removing the graphics card, all other PCI devices and I have tried a different PSU. I have also tried a different optical drive.

Any suggestions
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two short could be a video card, memory or a BIOS error depending on the bios you have.  I would check memory first.
wsc80bAuthor Commented:
Hi have just tried a different bit of ram from a working machine. Have removed the AGP graphics card and i am just using the on board graphics and still have the same problem.

The beeps are long (I think) and like I said very low, lower than any normal bios beep I have heard before, also not sure why it would happen after all the POST etc is complete.

Did you made any changes in your partition ?

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Can you enter BIOS setup and will the system shut down by itself even there? If it does, consider a heat issue (heatsink on CPU come loose or similar). If it doesn't, try another O/S, like running the machine on a Live CD (e.g. Knoppix), see if it works at all.

If you have more than one stick of RAM, try one at a time.
try to test your system with ram and disk tests  - i suggest to download ubcd , and run memtest86+ and disk test as needed ::

these can help too :                                    PC doctor                        free      TuffTest lite

alternatively, disconnect as much devices as you can : cd, add-on boards, ram sticks (leave 1)
wsc80bAuthor Commented:
Hi all,

Okay I have tried:

New RAM (one stick tried in both slots)
New optical drive
Different hard drive
New IDE cables to optical drive and hard drive
removed all PCI / AGP cards

and the problem still occurs.

I have also left the system at the BIOS screen for an hour and while the CPU temperature crept up to 72 degrees it did not shut down.

I am left assuming that it must be a mainboard problem unless anyone else can suggest anything else?
yes, seems like a mobo problem, can be bad caps too :

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wsc80bAuthor Commented:
Thanks for all your input everyone, if no one has any complaints then I will split the points accordingly
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