My local disk icon just changed, i don't know how or why. Please help me.

my local discs C & D just changed its icon,
i do not know how or why.

does anyone know how to fix this?
here’s some the links to the picture.

http://images.plurk.com/3864631_d1b976fe03361e374fa1120348b194dc.jpg

http://drop.io/pleasehelp

http://www.plurk.com/p/43o2ea

[appologies for the site, i didn’t have time to think which site to upload it to.]

please help me!!! :( :’-(