..First of all.., you should check your memory and disk drives... You can do this by pressing the esc button while on the boot up screen... This will take you into the BIOS screen... Go to...
You are limited only in terms of drive space, usually. This 'windows system restore' is handy to recover from bad program installs, spyware, some viruses etc, unless you frequently fill your...
No - system restore is designed to 'roll back' your computer to a point in time before a problem occurred. It will undo installations, but not restore deleted files.