Try these two options:
1. Left click any where on desktop and menu opens, scroll down and left click on
Properties..
2. Click on the desktop tab when display opens, then click the button that says
Customize Desktop.
3. When this display open you can do one of two things, either click restore default
Or put check marks in the boxes and click on each item and click OK
4. Then click apply and OK to close Display Properties box.
If this doesn’t restore all icons then go to :
1. Start
2. All programs - find the programs that you need icon for.
3. Right click on that item to get menu, a drop down list opens, find where it says
Send to and there will be a option that says create desktop shortcut, click it
And a icon will appear for that item.
OR
if you have an anti-virus, scan through your whole computer as it may be a virus that has caused this on accident.
If they don't work- reply that it didn't and I can search again for a solution!!!