CMOS error, HP Pavilion 13 (B20-8TU)

[Laptopturkey]

Hi guys,

My laptop has started giving a black screen with a blink code that corresponds to a BIOS corruption (two blinks). I've tried hard resetting, I've tried taking the battery off and on. This model has an internal battery that makes that very difficult. 've gone looking for any kind of button battery I could replace but I dont see one anywhere.

I went to the HP Support page for this model to look for BIOS updates but for some reason there are no downloads for BIOS (http://support.hp.com/my-en/drivers/selfservice/HP-Pavilion-13-Notebook-PC-series/7527795/model/7597...

Can anyone assist?

[Laptopturkey]

I Also tried the windows button and B key, but had no luck with that.

[A4Apollo]

Hey there! @Laptopturkey, Thank you for joining the HP Forums!

I understand that you are getting CMOS error on your laptop.

Kudos to you for trying out the steps before reaching out to us.

As you mentioned you are getting two blinks on your laptop which indicates BIOS corruption failure.

Please try updating the BIOS to latest version using this link.

If the issue still persists, try contacting HP for service options.

Link to contact HP.

Let me know if this works!

Have a great day ahead! 🙂

[Laptopturkey]

Hi Chetan,

thanks a lot for getting back to me. I created a USB key from the liknk you gave me and it started up, thanks. I have some touchpad issues so shut down a couple of times to check cables etc, and once it wouldn't restart, giving the 3 blink code. I restarted with the USB key again and I think it is ok.

I'm still not getting any touchpad though. Any ideas? I was fairly gentle when removing and replacing the ribbon. I wonder though if I have it the right way round. The one on the touchpad itself has the metalic side of the ribbon facing upward (as you look at it when you have the keyboard off), and the one connected to the main body has the metalic part of the ribbon facing downwards, is that correct?  I dont remember ever removing the one attached to the touchpad, so I think it should be right how it is, but it's not working.

Maybe something needs reinstalling if it's been disconnected? I also checked the HP site and followed the instructions to Mouse Properties, but there was no Device Settings tab.

Regards,

Declan

[A4Apollo]

Hi! @Laptopturkey, Thanks for the response.

Thanks for trying out the steps.

As you mentioned you are getting three blinks on your laptop. It indicates it could be a problem with the memory.

Try reseating the memory and check if it helps.

Also, since touchpad is not a customer replaceable part. I would suggest you contact HP and get the laptop serviced.

Take Care! 🙂

[Laptopturkey]

Hi Chetan,

are you able to confirm the positioning of the cables?

Regards,

Declan

[A4Apollo]

@Laptopturkey, thanks for the response.

Thanks for trying out the steps.

Please refer the instructions mentioned below to replace the touchpad.

Remove the touchpad board from the static dissipative bag.
With the top cover lifted, toe the tabs on the touchpad board into the touchpad board cradle in the top cover and apply pressure to the touchpad board to secure it with the retention tab.
Replace the two 2 mm P0 Phillips broad-head screws that secure the touchpad board to the top cover.
Insert the touchpad board ribbon cable into the touchpad board ZIF connector on the touchpad board and press the locking bar down to lock the cable into place. 

CAUTION: Use care to prevent damaging the ZIF connector and ribbon cable.

Refer the image for more information.

Hope this helps!

Cheers! 🙂

[Laptopturkey]

Many  thanks, Chetan.

Regards,

Declan

[A4Apollo]

@Laptopturkey, thanks for your response and time.

You're welcome and If you have any queries in future related to any HP products, you can always reach out to us.

We will try our best to help you out.

Take care,            

Have a great day ahead! 🙂

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