system
1
I have a worm named “DeviceGuideInfo” in my pen drive.
I tried formatting pen drive both ways.Quick format and another one
How to remove that?
1 more problem: when I select show hidden filed and system OS files in folder options
It agains move back to default options.
How to remove this 1?
Pondus
2
how do you know it is a worm, what detected it ?
system
3
Hello vin_eets and welcome to the forum. 
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What tools (scans) did you use to detect this infection?
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What is your OS, 32 or 64-bit?
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Are you using Avast? If so, what product (Free, Pro, AIS), and what version (5.0.677 is the latest version)?
Thank you.