Avast deleted my USB flash system files

Viruses and worms
1

Hey…
After scanning my USB flash with avast it moves the USB system files to chest… and the USB became unrecognized by the windows “8.1”… :cry:

;can’t fix this problem by “restore and add to exclusions” from the avast virus chest…? as the flash not recognized any more to restore files to it.
also can’t fix this problem by formatting the flash by the windows "windows was unable to complete the format. "
, neither using the command prompt “error: the parameter is incorrect …see the system event log for more information”
, also tried “m3 data recovery software for raw drive recovery” …“failed to fix raw drive”
…On Disc management: "(F:) 1.96 GB RAW Healthy (Primary Partition)
The system files are their in the virus chest but can’t restore them to the flash.
So; any help to fix this problem? ???

2

your USB stick is infected … and probably your computer also

see instructions here https://forum.avast.com/index.php?topic=53253.0

scroll down to SPECIFIC INFECTIONS LOGS picture nr#5 → MCShield
follow instructions, copy and paste the log here

3

to check your computer …

Instructions https://forum.avast.com/index.php?topic=53253.0
Attach Malwarebytes and Farbar Recovery Scan Tool logs … 3 logs total

See below the box you write in … Attachments and other options

when done a malware expert will assist you … since it is midnight in europe now it may be tomorrow before you see a reply

4

MCShield logs report:

MCShield ::Anti-Malware Tool:: http://www.mcshield.net/

v 3.0.5.28 / DB: 2015.10.2.1 / Windows 8.1 <<<

10/26/2015 09:49:07 PM > Drive C: - scan started (TI30981100B ~134 GB, NTFS HDD )…

=> The drive is clean.

10/26/2015 09:49:07 PM > Drive D: - scan started (no label ~552 GB, NTFS HDD )…

=> The drive is clean.

…
can’t perform scanning to the usb flash as it’s either unrecognized and not displaying… or appearing as a drive (F) in the PC window but behave as unrecognized.

5

continue and attach the other requested logs