when i power off my computer and on it after some time it shows a message on bios saying cmos settings wrong and i have only 2 options,f1 to enter setup f2 to load optimal defaults,and also date time is showing as last time i shutdown time and starting to go on,i have to press f2 every time to enter window please help me guz, i hv attached a picture and also it is not the cmos battery
