Windows 7 reporting incorrect hard drive free space! Any thoughts?

Partition Size (C:) : 215 GB
Windows 7 displays 6GB free space
When I select all the files including hidden files [Ctrl+A - properties] and check used space I see only 132GB is used!!
Clearly based on simple math I should have a lot more than 6GB free space!

I recently deleted a large number of big files.

What could be potentially causing this? Any fixes other than formatting the drive?
I used Disk Space fan to check the numbers and its giving me the same strange numbers

I emptied recycle bin and deleted temp files
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Could be a malware causing this. Run malwarebytes.
Sekar ChinnakannuStaff EngineerCommented:
its a system protection of windows 7. by default it enabled on partition and it  set to max usage. It means system can use more space to create backup version of your files.
Have you ran a chkdsk and defrag on the drive?  If you have done this in windows, consider booting into the recovery console and running 'chkdsk /f' from there.  Also, check the size of your system restore allocation (properties of my computer->System Protection) and make sure that is not set to allow use of too much space. (newb question, but did you empty the recycle bin?)
Protecting & Securing Your Critical Data

Considering 93 percent of companies file for bankruptcy within 12 months of a disaster that blocked access to their data for 10 days or more, planning for the worst is just smart business. Learn how Acronis Backup integrates security at every stage

JohnBusiness Consultant (Owner)Commented:
Try a trial copy of TreeSize (Jam Software). This tool is very reliable and will tell you where the space is going. If it gives strange answers, then malware (as suggested above) is the likely culprit. ... Thinkpads_User

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
rgu380Author Commented:
Thats right! I did get attacked by malware.Windows defender detected it.
I ran malwarebyte after that. But you are right this has happened since that attack.

I already ran malwarebytes once. Perhaps I should try again.
Thanks for the suggestion!

Any other ideas?
rgu380Author Commented:
OMG! Thanks thinkpads user. Tree size detected a hidden folder called RRbackup. This folder is created by my thinkpad to back up my system. I did not know about this.

I deleted the folder to recover my space. And that program is awesome!!

Thanks a lot!
I also want to thank every one else who took the trouble to comment.
JohnBusiness Consultant (Owner)Commented:
Thank you. I was pleased to assist and glad you found the backup folder. Lenovo machines like to do this. .... Thinkpads_User
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows 7

From novice to tech pro — start learning today.