I installed win 98 after reformatting the HDD. It had win 95 earlier. formatting and loading win 98 went on well. The OS boots normally, but when I try to shut down the PC, the shut down sequence commences but the screen with the message windows 98 is shutting down stays on. I can switch off after some time with the shut down screen on display and when re starting it boots normally. How do I get the PC to shut down completely in the normal fashion?