HP Pavilion 15 notebook screen replacement, cmos checksum is invalid, screen is split/divided into 4

[Leaa]

Screen was damaged. After replacement with a new one and push power on buttom, I can see message: The CMOS checksum is invalid. The CMOS will be reset to the default configuration and will be rebooted. Please check your BIOS Setup options to see if they change. CMOS Reset /502/, ENTER - Reboot the system. Or visit www.hp.com/go/techcenter/startup.

I am doing nothing that Windows starts and laptop screen is splitted/divided into 4 screens /the same/. How could be fixed this issue, could be fixed or is bad a new screen ? With old one screen I do not have this issue and also I can see just one screen. Please, help me. Thank you.

[Nal_NR · Accepted solution]

Hi @Leaa

Welcome to the HP Support Community!

I recommend updating the BIOS from the link and check if it helps.

If you continue facing the issue, then boot to BIOS by tapping the F10 key on startup and check whether you are able to duplicate the issue on the BIOS screen.

Also, check with an external monitor or a TV to make sure that the display works fine on an external device.

Let me know how it goes and you have a great day!

If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!

[Nal_NR]

Hi @Leaa,

As we did not hear from you, 
I'll be closing this case for now. If you need further assistance, feel free to reach out to us. 

Have a great day!

[Leaa]

Hello Elohi_NR,

I am so sorry for later feedback, let me explain what I did so far. I did update of BIOS /2times/ following forwarded link and nothing changed. First time after update I did not see  the same screen regarding the CMOS message, but screen was splitted into 4, when I switch on laptop. Next day when I switch on laptop, I saw the similar message on screen at the beginnin so I did update of Bios  once again.But still 4 screens are on monitor. So I was checking for cable for connecting to external monitor, unfortunately I did not find. But if this helps, I did replacement of screen with old one, which is damaged and screen is normal /no 4 screens, just one but with black pixels/. I do not if this helps here. 

Could you please let me know or describe actions with Bios /ESC,F10/ - what I need to do ?

Any idea, could a new lcd shows just 1 screen, no 4 little ? Is lcd bad  or what can I do to fix this issue ? Pls, help me.

Thank you in advance L

[Nal_NR]

Hi @Leaa,

Thanks for your reply and appreciate your trying all the recommended steps. 

This situation will need some additional support from our internal teams in HP. For that to happen, we will give you additional instructions/information via Private Message.

Please check your inbox on the forums page for private messages.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!