Hi... i have gigabyte ga-945gcm-s2c and i dont know where is the jumper to bios clearing CMOS... please help me to fix this problem... thanks before....

Hi,

If you look just above the PCI Express (graphics card) slot you should see the motherboard battery. To the right hand side of the battery should be the CMOS jumper, pop the jumper over the 2 brass pins to clear the CMOS. It should be also marked with the letters CLR-CMOS next to it.


Regards.

You can get the manual here:
http://download.gigabyte.eu/FileList/Manual/motherboard_manual_ga-945gcm-s2l%28s2c%29_e.pdf

But if you look to the right of the CMOS battery, you will see two pins, to reset the cmos, simply cap the pins with a jumper for 10 secs, or touch them with a screwdriver (mains power OFF of course)