The date and time were changing in my system once i login . Then i found that the battery cmos is dead. so i replaced this cmos battery. After this when i login i got an error message saying that "unauthorized bios attempt " and still the date and time keeps on changing . so i decided to change the bios jumpers to configuration mode 2-3 and login the sytem for 20 seconds and i heard a beep sounds. after that i cjanged the pin to the normal position 1-2.
Now still iam geting the same error message when i login. "unauthorized bios attempt "