Hardware

Select "Windows Explorer" in the "Open With" box and check the always use this program box. If you don't see it, browse for it, try C:\Windows look for explorer.exe.

Possible virus!, you can check this in folder options by veiw all files and system files, or sometimes there is no folder options there check you c: and d: any autorun.inf file.

I have seen this when the computer has gone out to lunch and did not return... A cold start usually fixes it.

Other one is Virus/Malware. Run the scans in safe mode.

Look for an autorun.inf file in root of C: and delete it.
Also, check File Types in Folder Options for any extra actions (there only should be a 'find' action).

Most of your apps are within reach on your computer.

Please post back if you have any more problems or questions.

i am sure not maybe your system c has a virus that creates autorun.inf. use virus removal softwares to delete it or just simply go to folder options and enable view hidden files and system files and look for autorun.inf and delete it..do it as well to your other drives. and of course dont forget to empty your trash and for sure it will work just fine...that's a common problem of ours in here...gud luck!