Virus attack? Files not showing in pen drive

[omega44-xt]

I noticed a strange problem in my laptop today. When I inserted a pen drive, it shows that 50MB is used but no file is shown, no hidden files too(hidden files are shown in other drives though). I then just formatted it & ignored the issue. Then I inserted my friend's pen drive which had photos worth 200MB, but none of them was shown.

So what could the problem be ?

I use KIS 2014, which was last updated about 2 weeks ago(Not updating due to slow net, updating fails after 3-5MB)
Other than the above said issue, my laptop is working fine (except I can't upgrade to Win8.1)

 

[coderunknown]

go to folder setting and enable show hidden files and folders as well as system files and folders. the files will be kept in a folder with no name.

 

[dashing.sujay]

@anupam- those are system marked files, that's why not shown.

Just do as sam said or run this command in cmd - X:/>attrib *.* -s -h -r /s /d, where X is your pen drive letter.

 

[Gollum]

@anupam- those are system marked files, that's why not shown.

Just do as sam said or run this command in cmd - X:/>attrib *.* -s -h -r /s /d, where X is your pen drive letter.

Man I used to use that command so much now I don't use pen drive at all lol

 

[omega44-xt]

@anupam- those are system marked files, that's why not shown.

Just do as sam said or run this command in cmd - X:/>attrib *.* -s -h -r /s /d, where X is your pen drive letter.

Access denied

Used it on a pen drive which shows the files, though.

 

[dashing.sujay]

Access denied

Used it on a pen drive which shows the files, though.

attempt in safe mode. The error is probably due to virus in background.

 

[CA50]

try this tool to restore directory attribute
Attribute Tweaker Free Download

 

[SaiyanGoku]

Just open cmd and run these commands
X:\
attrib -r -a -s -h /s /d
X denotes the drive letter of the pendrive.

 

[Zangetsu]

@OP: Is the file visible in other machine?

u can try FileSee

 

[omega44-xt]

Actually till now, I noticed it in only two pen drives:
One, was mine, formatted after seeing no file (thought files were corrupt or pen drive in fected with virus)
Second, my friend's pen drive, which I afterwards didn't ask him if the files were visible in his laptop afterwards

Anyways thanks for all the opinions........
I'll reinstall/refresh Windows 8 at the end of Feb, when my KIS expires (as I'm unable to upgrade to 8.1 now)

 

[Flash]

@OP: You tried those commands on a elevated prompt?

 

[omega44-xt]

@OP: You tried those commands on a elevated prompt?

Ya i tried it on cmd with administrative rights

 

[Flash]

Try this:
attrib -h -r -s /s /d x:\*.*

where x is your pen drive.

 

[dashing.sujay]

People, do reply after reading the thread. The command has been posted three times.