Don't know if any one can help?? I cleaned out all the dust out from inside the computer case and fans today, and when I turned it on I noticed in the bottom left tool bar a box has appeared which says "GDI+ Window" I have tried clicking it but it does nothing, HAVE I FU**ED something,

Also should the case fan (not the power pack fan) blow out or suck in.

I Thank you

PS Go easy on me I'm Computer illiterate.