characters display on desktp after virus

I had a computer that had the trojan.gem and download.trojan virus. I scan the HDD on another known clean system. It found the files jedisco.exe and pwroff.exe and deleted them. Now on the pc the characters are all garbally goosh, meaning you cannot read them more like characters and symbols rather than text. Any thing you click on has the same text. The start button looks normal, the text under the icons is all garbally goop as well. Any item on the start menu as well as any sub item all are unreadable.
Any thoughts