Why do my icons keep disappearing on my desktop?

My desktop keeps disappearing. Any ideas on how to fix this?

• My desktop, all the icons, and the start bar at the bottom of the screen keep disappearing until I restart my computer but even after restarting my computer if I try opening something it usually happens again. Does anyone have any ideas on how to fix this? This error message keeps coming up. http://s18.photobucket.com/albums/b105/Zell_Dincht05/?action=view&current=errormessage.jpg

• Answer:

  I would check if you have enough memory and hard drive space. This is what happens when you do not have sufficient amount of memory(virtual and physical). Also, try expanding your page pile if you hard drive has enough space. Try this and see what happens. Does it happen randomly or after like five minutes every time you logon. If it happens randomly than it most likely it is not a virus. Good luck.