Windows Vista taskbar, icons not showing

So yes.. let me explain my problem here.

Yesterday,I created a guest account and logged off to another,after that,my screen

went black and does not respond to whatever I pressed. Even after restarting my

computer,the problem persists.

Now,I had disabled the guest account through safe mode.

But in normal mode,icons,taskbars were gone,but mouse cursors and background

remains. I was wondering if this might have something related to graphic or something.

Also,I am not able to go to task manager,it goes black screen after I did crt + alt + del.

I am using windows vista x64bit

Please guys,I need help );
 
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