0 Disk Space : More I delete the less space I have Problem!

[plzhelp2day]

Hello,

Can someone please, please, please help me.

I have a Windows 7 Pro machine, with 500GB and recently it has been decreasing in hard drive capacity to the point I had only a few GBs left, so I decided to get rid of some large old files - it turns out - the MORE I DELETE THE LESS SPACE IS ACTUALLY FREED UP!

As illogical as it may seem, I'm not on crack!

Clearly this must be due to some sort of virus since I happened to have carried out a full scan scan  my system (just felt like doing it, not suspecting anything - I have a good habit of scanning every couple of months!) yesterday using AVAST and nothing turned up. However when I did a preboot scan two or three trojans came up which I deleted - only for this problem to come up.

What do I do?

I now have 0 bits of free space - none whatsoever on my C drive.

I neither have a backup copy or recover disk created because I was unable to create a HP Elitbook recovery disk due to some technical issues.

Any assistance would be kindly appreciated as I have some very important work to do and can't afford to waste days on end trying to sort this out - I might just throw it out the window on to my car!

Thank you once again 

[patio]

Without the Recovery CD your not in a good spot...
Order one from HP.

[Squashman]

You can delete all you want but a few things need to be considered with Windows 7.
If Volume Shadow Copy is enabled all your files including ones that are deleted still have old versions of them retained on the system. Plus System restore is part of that and that too is taking up space. So you can free up some space by throttling that back or off and emptying your recycle bin and running disk cleanup. Even turning off hibernation will free up disk space. There are a ton of things you can do. I am sure you Google searched for some ideas before you posted your question here.
 http://www.sevenforums.com/tutorials/129976-hard-disk-space-free-up-recover.html