OK,I see. the flash Drive may be infected and is infecting the Other PC.
If XP Download and Run FlashDisinfector
You have a flash drive infection. These worms travel through your portable drives. If they have been connected to other machines, they may now be infected.
Please download Flash_Disinfector.exe by sUBs
and save it to your desktop.
to run it and follow any prompts that may appear.
The utility may ask you to insert your flash drive and/or other removable drives including your mobile phone. Please do so and allow the utility to clean up those drives as well.
Wait until it has finished scanning and then exit the program.
Reboot your computer when done.Note: Flash_Disinfector will create a hidden folder named autorun.inf in each partition and every USB drive plugged in when you ran it. Don't delete this folder. It will help protect your drives from future infection.
When you plug the drive into the clean computer make sure you hold down the SHIFT key, which will stop any AutoRuns from executing. You can then run this tool:
Running On a clean Comp
You would need to run sub's flash disinfector on the clean computer first and hold down the shift key before connecting the external drive.