problem with graphics on the start menu

[pichi]

hi, i have installed windows NT server 4.0, my server had been infected with the Netsky virus, and others, but for goog it is desinfected right now, but i have a little problem, i think some system files may be damaged o corrupted, because if i open the start menu, i get all the normal options, run, search, programs, help, etc etc, but the arrows at the end of the labels are different, its like that graphics are damaged, does anyone know how to fix this??
thanks in advance

 

[Smorgan11]

have you tried seeing if there is a driver update for your graphics card