Windows 7 desktop icons and toolbars going away

I baught a new computer and everything was working well until my computer did an update. This was within 24 hours of buying the PC and bringing it home. Ever since the update everytime either i shut my monitor off or is going iunto sleep mode when i bring it out of sleep mode or turn the monitor back on all of my desktop icons and the tool bars are gone. I'm left with nothing but a backround picture and the rest is blank. I've been fixing this by right clicking the desktop and then clicking screen resolution and changing the screen to the other choice but this is a true pain to do everytime. I would much rather know why my icons and tool bar are poofing on me. Someone please help me with this.

Excellent suggestions from my colleagues! It's also possible that it was the downloading of the Update itself that caused the problem. If you decide not to do the System Restore, you can also try just uninstalling the Update and reinstalling it, to see if the Desktop icons and toolbar problems right themselves.