This could be a plethora of different problems. it could be an overheating issue, or it could be a number of hardware issues.

My suggestion is, get as much info as you can off your hard drive and...

Does it just completely power off instantly or does it follow the shutdown procedure and log you off then shut down?

Yea. I have had laptops that the battery lasts like caperjack said almost 5 years.

I would buy a replacement battery and use it for a while, if after 18 months it does the same thing you might...

There are companies out there that make replacement batteries for all sorts of laptops. but they will Void your HP warranty.

The battery dissipating that much in only 18 months? That is unusual...

Do you use this a lot to travel? does it move around a lot?

one of the battery connections inside the case could have come loose? If you are skilled enough you could take off the case and make...

You need to Zero Out both drives and start from scratch. make sure both drives are wiped and have no partitions then install the OS

For the first guy. Buy a new battery, they aren't very expensive and you can get one with more cells that will last longer.

For the second guy Mr Danishtahir87 Check you power options in vista and...

That graphics card suggests using a 500W PSU. If i were you i would get at least a 550 or a 600W. you can never have too many watts. lol

But the CPU over heating doesn't sound like a PSU problem....

People need to read the ENTIRE post before replying..
He said in his original post that it was a Pentium 4(single core)
and that he replaced the HDD on 7/08/08 so the HDD is only a few months old,...

sounds good...

I would suggest an 850W PSU.
Water cooling is pretty much a waist of time and money. they do cool other things besides the cpu but you have to buy either a special component made for water cooling...

at those temps it sounds ok... i would at least put an exhaust fan in though. i agree with willcomp. you need to draw the CPU exhaust away from the PSU. even with the exhaust funnel on the heat sync...

Fist of all the CPU doesn't beep. that is coming from a speaker mounted on the motherboard. now willcomp is right the beeps can mean a lot of different things.

You might try updating your BIOS.
If that doesn't work you can turn off ACPI mode during text mode setup. To do this, symply press the F7 key when you are prompted to install storage drivers. The...

yea there are a number of hardware issues that could cause this problem...

i have heard of a lot of people doing that. have you had any problems with ventilation? most of the people i have talked to have said buy a furnace filter and cut a little piece out.
furnace filters...

im not saying that yours is necessarily a hardware problem but don't rule it out.

i had that same thing happen to me on a customers computer and i was stumped for a while because i thought it was a software problem but it turned out that it was a bad hard drive.

is it really twitchy when it shuts down? or does it just quit? it does sound like your PSU have you made any hardware changes recently?

it is pretty easy to move everything to a new case as long as you just hook everything back up the way it was. if you have never done anything like this before my suggestion is take a few pictures of...

does it give you any error messages when shutting down or when booting back up? try starting it up in safe mode(press F8 while booting) then open a few windows. if it doesn't shut down then you have...

about the different pins.

1- the 3wire conector is just the standard one speed fan one hot wire one neutral and a ground

2- the 4wire connector can either be a multi-speed fan or it can have a...

you could leave the original fan plugged in and just move it to a different location then just run a new fan directly from the PSU with the 4pin Molex.

Ideally you need 2 fans anyway. 1 pulling...

I think it's the hard drive. if it where a fan it would start as soon as it was turned on and not after it warmed up which leads me to believe hard drive. In this case this is very bad and normally...

take it to a tech...

Well if you want your computer to run again i would suggest buying a new PSU and with the upgrade to an 8800 i would suggest a 750W especially with that AMD CPU. but the above post is correct. just...

is it a grinding like sticking a pencil in a fan? or is it more of a Hum sound?

does it always wait about a minute before making the noise?

The waiting a minute thing kinda throws me off...

Just out of curiosity... what kind of system do you have and why are you wanting to water cool?

http://www.newegg.com/Product/Product.aspx?Item=N82E16835108105


sorry forgot to post link

It really depends on the chipset but this is the one that i got for my computer and i love it. it was easy to put together and works really well.

and don ever buy a fan controll box. they are junk

In my experience fanEQ is a really glitchy program. Go find a program called SpeedFan. install it and see if it still does it then if that doesn't work replace the fan.

Honestly... unless you have some pretty wickedly hot equipment in there you really only need 3 fans. one at the bottom front blowing in, one at the top back sucking out and one on the top of the case...