Yesterday the hard drive show me that I still left with 175GB of space but today when i start up my laptop, It shows that I'm left with 172GB. What happened? I didn't install anything or download anything.
This sounds to me like System restore or maybe some Microsoft updates, Id check out some of the tutorials
http://www.vistax64.com/tutorials/76227-system-restore-disk-space.html
http://www.vistax64.com/tutorials/1...-change-automatic-restore-point-schedule.html
http://www.vistax64.com/tutorials/142656-sp1-disk-cleanup-tool.html
http://www.vistax64.com/tutorials/229239-sp2-disk-cleanup-tool.html?ltr=S