Memory Decreasing Rapidly

Hello, well y was on my computer yesterday and i noticed my computer's memory is decreasing for no given reason, i checked it again today and noticed it decreased again. I'm really worry and what is happening i'm not sure if it's a virus that i have on my computer. I checked with my Antivirus program (Bitdefender 2012) and it said no viruses.I haven't download to many program, and i stop download programs 2 weeks ago, so im not sure what it might be. Well i'm hoping you guys can solve my doubt. Thanks :)

Toshiba Satellite A665-S6050
Windows 7 Home Premium x64 bit

Profdlp:I honestly don't know, im sorry i do know its the icon that says "C:" on "Computer" I think it might be hard disk I have 453 GB total and 412 remaining.

Karlsnooks: Thanks ill try it :)

CrazyMexican98 said:

Profdlp:I honestly don't know, im sorry i do know its the icon that says "C:" on "Computer" I think it might be hard disk I have 453 GB total and 412 remaining.

Karlsnooks: Thanks ill try it :)

The most likely reason is a backup. If you have enabled Windows Backup or have a different backup program those files will consume diskspace.

karlsnooks said:

Sir George,
As part of your education, I suggest you try using win 7 to make a system image backup to the same hard disk as the one on which Win 7 is installed.

I am not certain what your post is suppose to mean. I am certain you can make a system image to the same drive as the one where Windows 7 is installed. I wouldn't advise it, but it most certainly can be done: Perhaps the native application included with Windows 7 doesn't allow it, I've never tried using it, but 3rd party software will. Additionally, I never stated that the OP was making an image of the disk, merely backing it up on the same drive.

I can see you have been posting in this forum for a while and are knowledge and obviously, by your post, believe you are superior to me. However, I have never found insults to be the basis for helpful or meaingful instruction.

As part of your education, I suggest you jump off that high horse!

karlsnooks said:

Sir George,
Compliments will get you nowhere.

You can not make a system image backup to the same drive where Win 7 is installed.

OK, I should have stopped while I was ahead and left it at "you can backup files" to the same drive. Which was what I stated in my first post.

Now for part 2; it's getting late and I am tired and confused "drive" with "disk" when I said you can make a system image. I was thinking of a partition on the same disk which can have an image.

I will not be giving you any further compliments tonight...:)