Have you tried to turn it on directly through the power switch pin terminal from the motherboard?

Do your drives detect in the bios? Did you flash your bios before?

There were three usb connectors located near the cmos battery. Look for the usb marks printed on the board. You can use one of them as an extension for the usb devices (front and back chassis usb...

Sorry, I got it now. I thought it was a bios chip.

Read this link to confirm that your chipset (part of a motherboard) is only designed for 400MHz system bus speed.
...

The truth is the chipset can handle 533MHz but your motherboard does not support it and also your motherboard does not support "overclocking". What you need is a new retail boxed motherboard that can...

Like I said before, it is not guaranteed if you run a 533MHz processor to your system because your board is only intended for a maximum of 400MHz.

The best solution in this issue is to get a new...

If you don't see any burnt mark, it's okay. Don't run it too long in your system. Just test it first.

A shorted processor will damage the motherboard. Burnt or shorted processors become severely faded or so much stains in its surface. Mild discolouration is normal.

Yes, you can run a 2.6GHz in...

Change DMA transfer mode of your DVDrom and cdrom to PIO mode (Device Manager - IDE ATA/ATAPI controllers).

Install the game in different computer. Check what will happen.

Remove and reinstall...

I have no idea on how you can help this forum. But I love this forum. All I know is I have been here for almost two years now, sharing my experience to others and getting some others ideas to augment...

I am also happy that you have found the culprit. The malfunctioning of the memory slot is sometimes created by some oxidation or foreign build up inside the slot. In order to remove this build up,...

Try each of the following:

Did you check the output voltage of the AC power adapter?

Run your computer with an AC power adapter source (without battery installed).

With the computer off,...

In addition to the above post.

Forgot to mention, do this first before anything else in the above post. Hit the "Reset" button with a clip or ballpen tip in a small hole found underneath the...

Is this happening also when you run your system with only the battery, or ac power adapter? Check the output voltage of your power adapter.

Since you were not able to boot into bios. You need to...

Is this a processor fan? Check it with another fan.

Meanwhile, look for the diagnostic lights found at the back of the cpu case. Observe them.

Then, pull the video card and a memory stick out of the motherboard and seat them again in their slots....

I think you have accidentally touched or moved the old stick. Pull it out and put it back. Maybe it was not properly seated in the slot.

Try swapping or try other power connector. I am sure there is a loose socket on the part of your hard drive.

Maybe the power connector and ide cable are not properly seated in their sockets.

What does "sometimes it doesn't boot" mean? Does your computer boot into bios or not or is it totally blackout?

Have you already tried powering it up by bypassing your front panel power switch...

Check and post here your Display Adapters listed in the Device Manager.

Okay, At least your hard drive is still alive. Thanks for posting your solution.

Change your configuration:

Do you have cdrom?

Don't disturb your c:\drive.

Try to attach your drive as slave with cdrom drive.

If you have usb controller, try to test your drive on it.

I agree with Master_Vos. You can partition your drive while in windows without losing your files through a partition magic program.

Did you put these drives in the same cable?

Or

Put the drive in other channel. Check what will happen.

No need to use bios update. Use retail version of xp (non-sp slipstreamed cd).

I think he has used an integrated/onboard video.

See to it all the connections inside the cpu are tight and snugly connected.

No beep code sounds means no case speaker was connected in your...

A computer that shuts off at random times is often a heat related issue.

Check carefully your cpu fan again. Add another case fan to dissipate some heat inside the unit.

If it doesn't help,...

I think you've set your system in hibernation mode. Run your computer. Try to press your power button for about 10 sec. in order to discharge everything in your system. Or your bios settings has been...

If you are sure the power supply is the problem, just try to exchange it. No warranty is guaranteed if the seal outside the box is tampered or broken. I am afraid if the noise you have heard is from...

Are you sure that noise is coming from inside the cpu unit or a noise from the speaker?

Open the pc case and try to isolate the problem. If the noise is coming from the power supply, maybe what you've just bought has a factory defect. You may try to ask for a new replacement. And also...

Why don't you try to remove and reassemble the motherboard and all the components again. Maybe there is a faulty connection or short between the motherboard and the case.