The easiest way to rebuild icons is with Tweak UI:http://www.microsoft...ppowertoys.mspx
The bottom entry in the left-hand panel is "Repair." Click that, and then, in the right-hand panel you will find a small drop-down menu. Choose the option for "Rebuild icons" and push the Repair Now
Another method is to temporarily change the size of all icons.
Right click the Desktop and choose Properties.
Then choose the Appearance
tab, and push the Advanced
button near the bottom right.
In the bottom panel of this dialog box will be a small drop-down menu box. Select the entry for Icon.
This will display the current size of your icons just to the right. (Likely 32) Adjust the size up or down a couple of points. OK. Apply. OK.
Then go back and set the icon size back to 32 (or whatever it is you like)
Hope this helps. Please post back with your progress.