All files and folders after a specific letter are all gone?

[tarui]

Not sure if this is the right place to post but I seem to have some weird problem with my PC

I have several HDDs connected to my PC and today i realised for 2 out of 4 drives, all files and folders starting with Q and beyond are completely missing. Not a single file remains. Either it's data corruption or some malware or someone deliberately tampered with my PC.

There's nothing inside the recycle bin and I haven't emptied it.

 

[AddRAM]

Do you really suppose someone deleted your data ? Come on

Install and Use a Partition Managing program to explore the drives, I`m sure your files are still there.

Free Partition Magic alternative and Partition Manager Freeware for Windows XP/Vista/7/8.

 

[tarui]

Install and Use a Partition Managing program to explore the drives, I`m sure your files are still there.

Free Partition Magic alternative and Partition Manager Freeware for Windows XP/Vista/7/8.

edit:didnt see the screenshot

what do I look for?