labelladonna said:
I don't know when and why this folder appears on my desktop. Virus Scan
didn't show that I'm infected. Could this be a trojan?
A recent install probably wrote a Run command to the registry
incorrectly, possibly with text extending beyond the path, or some other
extraneous syntax. It might have just dropped the executable, so
Windows thinks it should open the folder rather than a program. If you
remember installing software before the last reboot, try removing, then
reinstalling that software.
Otherwise, you may need to look in the registry, or the msconfig Startup
tab for an entry that references that folder, but no executable. Look
at the path to find out where the folder is referenced, run regedit, go
to that folder and delete that entry.
If you have any questions, ask before messing with the registry.