I want to delete some article on puter but what should I not delete. Please give support to?

I want to delete some article on puter but what should I not delete. Please give support to?

Do not delete win.ini :P, If you are using the window add/remove programs feature next you should leave any window updates, video card software, anti virus software and any thing you use alone.
Only delete what you should delete and save the rest
If you don't know what, DON'T! Get a bigger disc drive.
Not sure what you mean. Give more details please.
You obligation to provide a few details before your interview can be analyzed and answered. Do you mean parts of your OS or laptop files and folders you don't want to delete and lose? And what is the something you do want to delete?
Only delete files you typed or photos you saved, but programs do not delete UN install.