Re: Windows Explorere no more.
Just for grins once you're logged in do a Ctrl+Alt+Del and run a new process - the process is explorer - see if that does anything.
Second solution will and should work for sure (inshallah), is your 'explorer.exe' file may be deleted or corrupted. Check for it once. If so, Copy the 'explorer.exe' file from 'C:/WINDOWS' folder from any working/healthy(eg., your friend's)computer and paste it in your 'C:/WINDOWS' directory and Restart your system. Should solve the problem.