Need help.....Problem with desktop.

Ok first off i am not sure if this is the right place to post this, if it is wrong then i apologise.
My problem is, when i first turn the laptop on every thing works just fine, i can use the shorcut icons from desktop, but after a short time, if i have been browsing the internet or even playing a game, i can no longer use any thing on the desktop, it will not even let me right click. The desktop picture is there as well as all the icons.
Is there any one who can help me out here please?, cause the only way i can get it to work is to restart the laptop and then it only works for a short time or untill i open the internet browser

So far after having scan the whole system with Norton, i have not had the problem again. ( It found 24 problems and fix 24 problems ) I will tho post a screen shot of the task manager processes and post them if it does it again.
Thank you for your help, much appreciated.
Sarah.

It sounds like you were seriously infected. I would run the Norton full scan at least once a day for a week to see if anything recurs, then weekly thereafter.

Double-check Norton with a full scan from Malwarebytes which is the best free malware scanner out there now. Download, install and update first: Malwarebytes

Make sure the Windows 7 Firewall is turned on and your security Windows Updates are current.