Remove your CMOS Battery from your Motherboard, & disconnect all the power connector from it, Keep it for 1 hour. (normally all motherboard are resetting in 1 minute & 10 Minutes) for resetting BIOS.
After successfully resetting it please connect a good CMOS Battery in your Motherboard. Just do normal BIOS Setup like, System Date, System Time, Disable your Floppy Disk (if not working) & boot device priority. After changing save all of this by pressing F10 reboot your system. Now it will works very well.
