Hi lingyai,

If your Whole disc went bad then you wouldn't be able to do anything. But if just the section of the disc that holds the BiaB folder, or the GUID Partition Table (GPT), then only BiaB and RB would be infected. So a chkdsk should be run ASAP.

If your disk is perfect then you might has a bad virus. Then I would suggest you run these free programs in order:
1-cCleaner - https://www.ccleaner.com/ccleaner/download - to clean out all of the temp files in your computer
2-rKill - https://www.bleepingcomputer.com/download/rkill/
3-ADW Cleaner - https://www.malwarebytes.com/adwcleaner/
4-anti malwarebytes - https://www.malwarebytes.com/mwb-download/
5- your antivirus - do a full scan

After you get things running perfectly you should do a complete backup of your drive so if this happens again your have covered your butt.

Doc-take it easy John this is just a sharp scalpel. It will not cut deep so don't worry.
Me-I'm not John
Doc-I know, I am!

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware