Yesterday I had 379GB, today when I logged on It now shows 275GB

[abundance1012]

Something strange is happening with my system. originally my computer arrive with 451GB last week I had 375, yesterday I had 303, today I have 275. I have not downloaded anything. I system mechanic says I several registry error, hard drive errors, I have been getting the blue screen more than I care to think about, and my virtual memory is do to 48%. I have a dell inspirion 1750, windows 7 64bit Microsoft Home Premium. Often get some that says system error memory dump files.

Help Please, Please,

 

[Tmagic650]

Your hard drive may be dying... Go to Computer and right-click on the C drive, select properties, tools, check hard drive for errors. Set a check for next start up