COMS RAM dead?can not boot if the COMS battery is in

well,last week I noticed the laptop can not reboot ,stuck before POST,see nothing on screen.I need to press power on button to force it shutdown.
Now it can't boot even you press the power on button.

I can only get it boot using this method:
If the CMOS battery is in,no matter what I do,no POST.

Remove the CMOS battery,no effect;

remove the CMOS battery,remove the notebook battery and plug out,then put back notebook battery or plug in,power on,no effect;

remove the CMOS battery,remove the notebook battery and plug out and press several times on the power on button.Then put back notebook battery or plug in,press power on then go to POST and receive the CMOS reset screen,so I can boot into system.

remove the CMOS battery,remove the notebook battery and plug out and press several times on the power on button.Then put back CMOS battery, notebook battery or plug in,press power on then go to POST and receive the CMOS reset screen,if I do the setup,at next restart,no POST.

Seems as soon as the CMOS RAM stored info and the system tries to read it ,it can not do the POST...the CMOS RAM dead?

 

CMOS is the word you should be using.

Did you check that battery with a meter to see if it is OK? If the battery is dying then maybe the CMOS RAM contents aren't being saved properly. Perhaps replace the battery with a new one and see what happens.

If you still get problems with a new battery then something else is the problem.

John

 

Thank you~I'll try this.But it shouldn't be cause the laptop is only 6 months old.

 

a lot of things shouldn't be.

don't come to conclusions until you've performed proper diagnostic tests.