Hi pautpa,
Sorry to hear of the issues you are finding with diminishing disc space and the free space becoming filled up quickly even when you have removed unwanted applications.
Malicious code present on your computer has the ability to do this, but before Juliet can work her magic and help you remove any malicious code that may be present we need to free up sufficient space on your computer so that you can download the scanning and cleaning tools that will enable her to see what is going on inside your computer.
Here's an outline of a plan of campaign for your consideration:
1 Check your system images and disc images to make sure you can locate them easily, if you have the ability to verify them then please do so. If for any reason you do not have system or disc images then it is recommended that you make some immediately, Keep at least one copy safe offsite on removable media (external hard drives (USB) are very useful for this) if you don't have a system image or Win 7 repair disc then make them now.
(Start>Computer>Right click C drive>Properties>Tools>Back up now>System image, and then follow on screen directions (you can use similar instructions to create a System Repair Disc.
I usually advise my customers that they should have at least 3 copies of their important stuff on different media....( they rarely follow this advice.... but it's still good advice!)
2 If you have your data files on a separate partition that you have not yet imaged it would be wise to check your backups, make sure they are are all complete and include everything you need.
3 Locate and keep safe all your installations discs and product serial keys/numbers (including that for Win 7 itself)
4 We will now try to free up some free space, so using some of the previous steps this time it should be:
(Start>Computer>Right click C drive>Properties>General>Disk Cleanup (this will initiate a scan and then produce some data for you including how much space it is likely to free up and how it is made up, if the saving is worth while then you can go ahead with the cleanup)
5 Let us know much disk space you have managed to free up.
6 Now we will try and consolidate the position by checking your hard drive for errors and consistency.
the steps are:
Start>Computer>Right click C drive>Properties>Tools>Error Checking>Check Now> place a tickmark in each of the options> click start, accept the warning by clicking on Schedule disk check click apply/start>OK and restart your computer. This procdure will take several hours to run and you will not be able to use your computer whilst it is running, Do not interupt it or try to restart your machine( the procedure will restart your machine when it has finished)
7 Next open a command prompt with elevated privileges ( Start> type in cmd and on the dropdown menu right click on cmd or cmd.exe and click Run as Administrator, click OK, and at the DOS like box type
sfc /scannow
and press enter key
The utility will check all protected Windows system Files and repair them if damaged or replace them if missing.
Finally check your remaining hard drive space, is it showing a reasonable amount of free space?
Take a screen dump and attach it to your reply so we can see the amount of free space you have available
Regards
paws