Problem with Icons

It doesn’t happend all the time the problem such this; myself I didn’t see it; and it can be a big problem.
On user’s PC all default icon is black; a system icon, word icon, every icon that you can have it.I’ll try it everything incl. changing in “Add/Remove Programs”, resolution, and the icon are still black.

Can anybody help me , how can I get back those default icons?

Please, if anyone know how to solve this problem, please contact me.

Address:zinka.topolcnik@cchbc.com

Thanks inadvance,
Zinka