回复：seek help on PC with windows xp

I have turned PC on without connecting mouse and key board to PC. This time, graphic comes back. System asked me to type either F1 or Delete. I inserted keyboard and mouse back. It didn't work. I restarted PC with keyboard and mouse on, this time, monitor went to black again and no any graphic any more. So it seems that the problem is on keyboard and mouse. My keyboard and mouse are A4 wireless set. Model No.:RFKBRX5C. This set of equipment was working efficiently in past 4 years. Only thing was that I need to change the bettery in mouse. I even didn't chnage battery in keyboard. So please let me know how to fix this problem. Stwiching to a new set of keyboard and mouse? Thanks.