clock going down after renew motherboard

Hi,
On my laptom HP dv9230 was replaced at first motherboard. Then i was
find clock all the time going down. After i was repleced the cmos
battery. And nothing change. When i switched off and on laptop nothing
change. Time was same like before switched power off.
do you know what kind of problem i have?

On Jun 4, 7:52*am, valegio.ship...@gmail.com wrote:

> find clock all the time going down. After i was repleced the cmos
> battery. And nothing change. When i switched off and on laptop nothing
> change. Time was same like before switched power off.

Measure the CMOS battery while in-circuit. If voltage good, use an
oscilloscope to check the 32768Hz watch crystal that runs the CMOS
clock.