Blank White Screen on Pavlion DM1-4020sa

[Radon]

Hi Guys,

I have Pavlion DM1-4020sa, when I switch it on, a permanent blank-white screen appears.

Test Done:

1- The laptop works OK (boots to BIOS) on an external monitor.

2- The LCD itself works OK also on a nother notebook.

3- Hard reset: Done with no hope

From the tests above, should I exclud any motherboard and/or graphics problem but it could be just the cable from the mother board to the screen? Unfortunately, I cannot check the cable as I don't have another notebook that comes with the same cable.

How to send this for repair to HP?

Many thanks 

[Sparkles1 · Accepted solution]

Hi @Radon,

Welcome to the HP Forum!

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I grasp that when you start your notebook the display remains blank. When you connect an external display you can access the bios. You have also tried the display itself on another computer and it also works.  A hard reset did not change anything.

You asked if it could be the cable, yes it could be a bad cable. You have been unable to locate a replacement to try.  You would like to contact HP Support for service options.  

Please contact HP support at Contact HP Support.

As you did state that you were unable to locate the replacement, here is a link to the:

HP Pavilion dv7 Entertainment PC Maintenance and Service Guide

Please note chapter 3, page 28, item 6 for the display cable part number. Here is a link to the:

HP Parts Store

If you are still unable to find the part, you can try doing a web search with the part number.

Please let me know if this resolves the issue by marking this post as "Accept as Solution".  To simply say thanks, click the “Thumbs Up” below!    If you require further assistance let me know and I will gladly do all I can to help.

[Radon]

Thanks for help.

I am awaiting for a screen cable to be delivered soon (ordered from ebay). I will replace the cable and see how it goes.

Many thanks

[Radon]

Just an update: I replpaced the cable and the screen still the same, blanck white  😕