posted on Jan, 6 2009 @ 01:53 AM
You could just re-seat all your connections inside your case first. This can sometimes fix un-bootable computers. This includes reseating your CPU.
You may have already done this.
You should definitely put more thermal greese between your CPU heatsink and CPU, after you clean off the old to prevent overheating, when you re-seat
Re-seating is simply un-plugging things and plugging them back into place.
Your memory could be bad. I have seen machines that did absolutely nothing when you hit the power because of bad memory.
If you have two sticks of memory in there, you could pull one out, try to boot it up. If it still doesn't boot, try the other stick of memory by
Or, you could borrow a matching stick of good RAM, and put it in the machine, and see if it will boot.
Your power supply could still be bad, it is worth checking.
Power supplies, memory, and hard drives seem to fail more often than the actual motherboard. This makes many repairs quite cheap, usually. Shop
around on E-bay for parts. Hard drives are cheap, memory is cheap, and power supplies are cheap. This problem is obviously not your hard drive,
though. Just make sure the power supply is going to work with your DELL.
**To sum it up, re-seat, check your memory, and check your power supply.
If these don't seem to be the problem, you can check your motherboard for swollen and leaking capacitors. Capacitors are round tall-ish cylinders,
that are soldered onto the board. If so, you are looking at replacing your motherboard. With labor costs, it may be better to just to replace the
board, unless you find someone who is skilled and cheap at replacing such a thing as capacitors on a motherboard. You can fry a motherboard if you
aren't careful. I think it's more of a lost art these days. People just replace the boards. A good used motherbaord might not cost too much,
again, you can shop around on E-bay.
Also, a computer that stops beeping when it boots up could be a sign of a bad motherboard.