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CLEVO P750ZM Upgrade GPU GTX980 to GTX1070


serge245

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Good day to everyone.
The preface.
In the native GTX980, the supply circuits burned out and because of this, there was a desire to upgrade to GTX1070 and change the matrix to LTN156FL02, since 1070 does not work with LVDS.
By default, the motherboard assumes a variety of interfaces for working with the LVDS and eDP matrix.
In my case, the LVDS was soldered, and for eDP, the connector and the missing circuit elements from the MXM interface had to be soldered.
The launch was completed, but Windows identified the card as Generic with appropriate limitations in operation.
When switching to NVIDIA drivers, when Windows boots, the image on the laptop screen is lost, since Windows does not see this monitor, and performance remains only on external DP and HDMI.
The BIOS is set to 1.03.15 with an added block for NVMe.

ME FW Version 9.1.20.1035

KBC/EC Firmware Revision 1.03.09

VBIOS Revision 86.04.42.00.03

Could the BIOS be to blame in this case?

Now I'm looking for problems in the BIOS, but I'm confused by the fact that the firmware on the manufacturer's website did not differ for my mother model coming with a variety of LVDS and eDP interfaces, they have the same modification.
In the BIOS, via amibcp, I saw that in the LCD Control section, the Active LFP parameter was already initially set by default to eDP Port-A, although in the settings there is an option to select LVDS and eDP Port-D.

Dear experts, help me find a solution, I am grateful in advance.

BIOS_1.jpg

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  • 2 months later...

Hello,
I don't know if it can help cause i'm newbie in the BIOS modding community but it appear i have the same laptop as you but i've upgrade the GTX970M to my current GTX1070.
I Had the same settings as you but the only thing i've flashed is the vBIOS of my GTX1070, the original vBIOS had only HDMI working not the internal screen.

I have the stock limited BIOS on my Clevo version: 1.03.04

My VBIOS Revision is 86.04.72.00.12

Subvendor Clevo/Kapok (the first vbios was Kapok)

I don't know if i had the LVDS or eDP solder.
My display is a 1080p g-sync version

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  • 4 weeks later...
On 8/11/2024 at 3:17 PM, EuReKaLoS said:

Hello,
I don't know if it can help cause i'm newbie in the BIOS modding community but it appear i have the same laptop as you but i've upgrade the GTX970M to my current GTX1070.
I Had the same settings as you but the only thing i've flashed is the vBIOS of my GTX1070, the original vBIOS had only HDMI working not the internal screen.

I have the stock limited BIOS on my Clevo version: 1.03.04

My VBIOS Revision is 86.04.72.00.12

Subvendor Clevo/Kapok (the first vbios was Kapok)

I don't know if i had the LVDS or eDP solder.
My display is a 1080p g-sync version

Thank you for your response.

I saw your post on the bios-mods forum https://www.bios-mods.com/forum/showthread.php?tid=40372

You already had the eDP interface installed on your board, since the 1070 series does not work with LVDS. I have already downloaded and tried to flash vbios 86.04.72.00.12, which you posted in your message.

But the result in my case remained the same, laptop display not work with NVidia drivers.

I am already inclined to the version that my 1070 video card itself has a hardware malfunction, since my old GTX980 video card after repair successfully works on all image output interfaces, including via e-DP.

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