Cant double click on hard drive icon

[chubbito666]

I recently had to install XP on a friends machine, and I ended up copying some of the XP files to his C drive, and then accessing them from there while installing. Anyway, now the computer wont recognize the drive as being a hard drive. It is all still functional, but you cant just click on it and explore it, you have to right click and go to 'explore' . In my years, I've never ran into this problem, any ideas of how to fix this??