No you dont lose anything. All user files are kept safe only system and program files are altered.

You need to find the reason the comp is running so slow.

Do you have an up to date antivirus program and windows up to date?

spinner is the daddy

post here wen u have done it sean if it worked or not

Ive done, now to check.

ooooooooo........................ lol

It keeps saying, memory could not be read, press ok to get rid of the program

lmao

grrrrrrrrr give u computer a good wakin lol

Ill restore once more.

Ouch.

Ok, there is a possibility your computer is running slow because of a memory hardware failure.

You can grab this small memory checker program to test it before we try anything else;

http://www.benchmarkhq.ru/english.html?/be_memory.html

Yeah spinner is right!

Assuming your memory is ok (hopefully!), what do you see when you go to the java troubleshooter?

http://www.funkysnooker.com/help.do?section=playing_problems

Lyle it should say SUCCESS when you go to it!

Im off lyle cya!

Well, i'm off too but just n case you dont get "success" (i dont think you will sadly)

Here's the standard routine to repair a corrupted install;

Starting from scratch..

Go to control panel and uninstall all Java installations (there may be more than one).

Clear all your browsers histories including downloaded program files.

Reboot the computer.

Run a windows update (mainly to run the malware scan)

Then go to http://www.java.com and install a clean copy.

Edited at 22:06 Mon 16/07/07 (BST)

Right guys its my first time on today and I still can't get on, I am going to try some of Spinners suggestions.

I don't know how long it is going to take to find out if it is success, because everytime I try to find out, it either doesn't respond, or I get the "you must terminate the program" thing.

I'd buy a new hard-drive if i were you!

Nothing to do with the hard drive i'm pretty sur of that

The fact you are having the fatal error everytime any java applet runs points squarely at a corrupted java install. The workthrough above should sort that.

I had the same problem on my laptop... I then discovered that (for some weird reason) it was Windows Live Messenger that screwed it up.... when I uninstalled Windows Live Mesenger it worked fine.

Although this could be a memory problem... try uninstalling a large program that you don't use!