HP Laptop motherboards compatibility.

Hello agin my well experienced HP friends!
I have, at this time, a question about 2 laptops. First, I have an HP DV9910-us. It had Vista, which has been upgraded to Win. 7. Now, I had posted this question before, about the sound issue, This one works well, however, it has no sound. Everything checks out, and I have done the "uninstall, & re-install" the required drivers. Nothing worked.
The popular opinion is that the sound section of the motherboard is N/G. Now, I have purchased an HP DV 9812, with the same components. They are both: AMD Turion X2 64 @ 2.0 processors. The parts one I just purchased, has no LCD in the top compartment section. But, the seller states it works fine on an external monitor hooked up to it. Boots up, and loads Windows.
So, I guess my question is: will the motherboards be compatibile? The do have the same configuration. I am going to only switch out the motherboards from each. Will this be o.k.? Love to hear some opinions!
Thanks for your time folks!
TFL
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Should be compatible. Technically they are both part of the dv9700z model line. Worst case one is "defeatured" and the other "full featured" which might mean you have a port on the chassis that has no corresponding hardware on the board (open hole) or you have something on the board that is blocked by the case and you have to use a dremel tool to open a hole in the case. Might be a stupid question but why swap motherboards? Why not just move the display (screen housing) over from the dv9910 to the dv9812 chassis and leave the motherboard in its housing? Still not an easy job but I have disassembled a few dv9000s and would want to avoid trying to remove the motherboard. Big job. Lots of subassemblies and ribbon cable going all over the place.
By the way I would check this myself (i.e. specs of the two units) but the two model numbers both need the last 2 letters to find correct specs and you did not give it for the dv9812.
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Here are the detailed information of the laptop:
Lenovo G580
Model Name 20157
machine type model:LenovoG580ARRETXI53210M4G500RIN
MACHINE TYPE MODEL NO:59324058
MACHINE SERIAL NO:**********
Input: 20V ----- 4.5A
Mfg Date: 12/10/22
S/N: ********** P/N: 59324058
MO: WBxxxxxxxx Factory ID: KS
Manufactured for Lenovo
(SINGAPORE)PTE.LTD
Made in China
Moderator note: serial number removed for member's protection.

hi Arczi_Ghost,
Welcome to the Lenovo Forums.
From the first video, it looks like there's a problem with the Windows Loader or a system file that's needed to load but fails. Since you already re-installed Windows, this is most likely not an OS issue.
- Windows 7 Boot Process
From the second video, the flickering can be with the display (LCD) or wit hthe GPU / GPU driver. It's a bit early to tell without running some tests.
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Edt: Fixed the links
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~~~~~~~~~~~~~~~~~~~~~
My posts are my opinions and experiences from working in the tech industry
~~~~~~~~~~~~~~~~~~~~~

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