CMOS battery problems

[mcturnergarai]

My laptop just powered down. There are no beeping sounds from the motherboard. When i plug in the power cable it is not showing any sign of charging. I had opened the back of my pc to see if there was any problems and i found that the CMOS battery was just lying on top of the motherboard, after puting it back in its place the situation did not change.how can i fix my laptop? I might had also run the computer for about an hour while the CMOS battery was just lying on the motherboard.

 

[Ralston18]

Update your post to include make and model laptop. Age?