Double check to see if the yellow TIP box at the top of the tutorial below may be the issues with a autorun.inf file. If not, then you can try Option One or Option Two to manually change the icon to the default icon using this path: C:\Windows\System32\imageres.dll,-36
Before doing something like that, see if doing a system restore using a restore point dated when it was displayed properly may be able to fix it for you.
System Manufacturer/Model Number HP, Dell, Gateway, Toshiba - 4 laptops and 2 desktops OS Vista, Windows7, Mint Mate, Zorin, Windows 8 CPU from 1.6GHz Duo to i7 Monitor(s) Displays 2x HP w2207
Keyboard with trackball - no mices Mouse Trackball mice Hard Drives 5x HDD, 7x SSD, 12x Externals Internet Speed DSL 6000