Desktop Icons disappeared

Hi,

I have a windows nt4.0 computer w/service pak4 installed. I cleared the cmos on the mother board now all the desktop icons have disappeared. I’m unable to left or right click the mouse.. The screen comes up blank. I do get the logon screen,to logon to the network all seems okay until’ I get to the desktop(nothing there).I’m able to enter ms-dos and see all the files…