u/FalconGamz

i think i used o have this problem a few months back, but it has come back now, a lot of times now when i try to turn my laptop on, the keyboard doesnt work. so i have to long press for 20 seconds to turn it on, when it does turn on the laptops clock is way behind, sometimes even by a day. why does this happen? is it cause the cmos battery is dead?(i did a bit of research but stil confused)