M17xR4 Upgrade to gtx680m Blank Screen

[snagsy]

Hi guys first time posting here.

 

I'm hoping for a little help. I have a m17xr4 quite a few years old now which has gone through a couple of GTX675m's now.

 

So recently I purchased a GTX680m from ebay and after installing I am getting a blank screen, with no back lighting or signs of life.Fans/Lights run and I hear windows start fine, but I'm unable to switch to internal graphics after pressing the Fn F7. If I hit enter I hear an error menu so something pops a new window up.

 

If i remove the GTX680m it displays fine with its internal hd4000 graphics. I have been speaking to the seller and found that the card is from the M17xr4 120hz wide FHD 3D. My model only has the 60hz screen but I didn't think this was a concern. With the card fitted the GTX680m warms up a little.

 

I removed the  Nvidia drivers before installation through the control panel and also DDU. I have tried Blind flashing the vbios with a stock bios sent from the original owner and also one from techpowerup with no change. I used nvflash v5.14.1 Dos version, I get 1 chime when I press 'y' 20 seconds in and get another chime 20 seconds later so I feel it has flashed but cant be 100% certain as I cant see.

 

Any help is greatly appreciated. Many thanks.

 

My specs:

 

Win 7 home premium

Processor i7-3720QM 2.6Ghz
A12 BIOS stock
8GB Ram
originally a GTX675m which recently died
17.3" wideFHD (1920x1080) WLED LCD non 3D

Edited July 9, 2017 by snagsy

[AleksR17x]

Sounds to me like the 680m you got has a problem with the output. If you buy another i would buy a 770m and get a 3D screen. The 120hz refreshrate is relaxing to look at compared to 60.

 

I wouldnt mess with stock bios to modified then go stock again. Leave it modified so you can upgrade from 680m and set Display to PEG for 3D display.