Data crunch in C drive Help me

[prasannab13]

I use Windows 7 OS and last night i shutdown properly. When I turned on today, all data in 'c drive downloads' was lost but space allocated to them is still present and some applications pinned in taskbar got unpinned. Mozilla's all data was also lost. I feel that windows is running in some mode by the font and color and data became invisible now Please help me

Im posting some screenshots of my windows...

[Kola2842]

I think you are logged with different user account or guest account. Log off and start with same account.

Btw Use Search client to search your data "by its extension" in c drive.
If you don't know extension, Tell here what kind of file was that.