HP Pavilion X360 - Black screen on boot / Motherboard p/n needed

[Rob99999999999]

Hi,

I have a Pavilion X360 just out of waranty which has a black screen when it boots.

Issue:

- Powers on ok (white light on power button)

- Clearly boots from SSD (lights for drive blink away then remain stable)

- No error messages from caps lock key

- Blank screen on laptop (no image at all, not in any position)

- No image when connected to HDMI

Actions taken:

- Hard reset pressing power key for 15 second

- Hard reset, disconnecting battery

- Reset bios with win + B / win + v, seems to reset but no effect

- Update bios via usb, again seems to update but no effect

- Tried re seating the memory, no effect

- Tired new memory module, no effect

- Tried unplugging and re connecting each cable again no effect

I have come to the conculsion that the m/b must be fried and I will need to swap this?

I can not find the m/b part number on HP Partsurfer and am unable to find a label with any kind of part number on the m/b itself

Model: 13-s150sa

Region: UK

S/N:  [personal information removed]

P/N: N7H5SEA#ABU (I think this is just for the case

Warranty:  [personal information removed]

Questions please:

1. Is there anything I haven't tried which might bring this laptop back to life?

2. If I need a new m/b then how do I find the part number and is there anywhere cheap I can buy this (UK ideally)

Many thanks for all your help,

Rob

[The_Fossette]

Hi @Rob99999999999

Welcome to the HP Forums!

Thank you for posting your query in this forum, it's a great place to find answers.

I reviewed your post and I understand that the computer is not booting to windows.

Don’t worry, we will work together to resolve this issue and It’s a pleasure to assist you in this regard.

Awesome job on diagnosing the issue correctly and performing smart troubleshooting before posting your question on HP forums. Kudos to you on that score.  

In order that I may provide you with an accurate solution, I will need a few more details.

When was the last time the computer was working fine?

Have you made any software or hardware changes on the computer?

Meanwhile, I recommend you to connect the computer to a external monitor or TV and check whether you get any display?

If the issue persists, follow the steps in the below article and check.

http://hp.care/2oFlOWC

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

Take care.

Cheers!

[Rob99999999999]

Thought I'd add that I have tried holding all 4 cursor keys down while powering on as mentioned in another thread, this did not work either.

Any thoughts much appreciated.

[Rob99999999999]

Thank you for your response The_Fossette

Did not make any hardware of software changes prior to the issue. It was working fine with no glitches last week then nothing.

I am baffled. I'd be surprised if it is indeed a fried mother board given this laptop is very new, just over a year old, but given I have re seated every cable and there is no sign of life when plugging in a HDMI display either I am at a loss?

Many thanks.

[The_Fossette]

Hi @Rob99999999999

Follow the steps in the below article and check if it helps.

http://hp.care/2oFlOWC

NOTE: Ignore the steps you have already performed.

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

[Rob99999999999]

Thank you The_Fossette

As you would note from my original post I had tried most of those already and re tried just in case.

For the System Diagnistics Test - Is it possible to run this with no display? If it is then I will give it a go.

For the query about the mother board part number are you also able to help with this from the serial number I provided as I am unable to find this on the partfinder.

Many thanks.

[The_Fossette]

Hi @Rob99999999999

I will surely help you with the part number of the motherboard. Can you please confirm the product and the serial number of your computer one more time.

I recommend you to follow the steps in the below link to find the product details.

http://hp.care/2pX2xfT

NOTE: Please share the product details in a private message.

Awaiting your reply.

[The_Fossette]

Hi @Rob99999999999

Below is the part number for the motherboard.

793795-011

I recommend you to contact phone support and they will assist you in purchasing the motherboard for your computer.

Here is how you can get in touch with the phone support.

Open link:  www.hp.com/contacthp/
Enter Product number or select to auto detects
Scroll down to "Still need help? Complete the form to select your contact options"
Scroll down and click on HP contact options - click on Get phone number.

Take care.

Cheers!