Desktop Computer dc5750 shuts down and red light flashes on front of computer and won't start at all

I have a DC5750 HP Compaq Computer it is 6 years old, but I have 4GB Ram, Nvidia GS8400 Graphics Card, two one TB Hard Drives. While I tried to re-installed my operating systems it all of a sudden shut down not once but twice, I opened up the side of the computer and found that it was hotter then normal. I let it sit for a while thinking it maybe over heating after hooking it back up I turned it on again nothing happened except a beeping noise and red lights flashing on the front. Can this be fixed as money is an issue.
Thanks
Rob

Hi, Rob:
Please review Appendix A. starting on page 56 of the Troubleshooting Guide at the link below to interpret the beep codes and see the probable causes and recommended troubleshooting steps.
http://h20566.www2.hp.com/portal/site/hpsc/template.BINARYPORTLET/public/kb/docDisplay/resource.proc...

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Desktop Computer dc5750 shuts down and red light flashes on front of computer and won't start at all

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