I have recently received my new computer hardware and at first I couldn't get anything to run so I went out to best buy and I purchased a 500 watt pus and everything would turn on BUT when I turn on my computer I hear one beep and than it will shut off within 30 seconds. When I disconnect my CD drives my computer will still beep once when I turn it on but it wont shut off and I have to go into to safe mode. The error that I got was oxoooooo7e oxcoooooo5 oxba288750 oxba4e3430 oxba4e312c

The only things that I am using in my new computer that isn't new is my internal harddrive and both of my internal cd drives that came with my dell dimension 3000. The new hardware that I have are an asus a8n5x motherboard, radeon x800XL video card, 1 gig of kingston ddr ram, AMD 3700+ Diego, old harddrive that I used in my dell dimension 3000, and a antec antec neo HE500 psu. Any help would be greatly appreciated.

Sounds like it may be a heat issue, a good computer will shut off when it gets to hot, and going into safe mode will tell some stuff not to run thus heating it up.

OR

You say the HDD isn't new, does that mean that all the software/install on it is old also? if so you will need to reinstall (sorry) inorder for it to work. Safemode used default and simplified drivers thus not resulting in a crash. If you still want to keep the old data, buy another HDD and install to it then hook up the old one as slave.

All of the software on my HDD is old. Should I reformat my HDD? Thanks for the help.

Don't quote me, but that shoud fix things, you might want to wait for second opinion. Unless it isn't a problem, you might even be able to reinstall ontop of the existing OS, wich would reset the resistry and system file so program wouldn't work but your files would still be there.

a friend of mine told me he had problems getting his computer working after he installed a video card, a new one, i think it was a nvidia and also i got an error like that when i wanted to change from hard drive, and at the end i didnt so better to check your check your hardware manuals and try to follow everything step by step and if it doesnt work well contact the support better via phone so you can explain clearly all.

I'll tell you my experience, with WinXP the drivers needed for the computer is installed, but when you upgrades a service pack, only I relavent part is installed. At that time(when I bought my new computer) I reformatted and reinstalled XP. But other suggestions for you are to:
1. Repair your computer with your XP(+SP) CD
2. Try using sysprep 2 in safemode and tell it to use the "mini" setup and click reseal.

PS. That also happens when you're trying to install(Mostly illegally) using a cross-specification "ghost image".

Computer beeps beep for a reason. Like normally when you start up your computer, it only beeps once shot beep. When it's a RAM issue, it beeps longer and so forth.
But for your case, I'm guessing it might be a heat problem.

Yeah, if it's a new processor, but the samoe old heatsinc/fan then it just might not be good enough, although my experience woth heat, you don't even have time to POST

Wel...I had done something like this with a phone and then it had died in about 15 seconds...

Well, of course, then I had put a 120v thing into a 220v outlet which probably was behind the problem