Hi!
First of all the Specs:
The Problem:
So, back in '18 i made a bios update to get the key backlight to work correctly.Since then, things changed over time. After some months i got the first bluescreens and then suddenly things added up.
Sadly i deleted the Bios after the Flash and now i cant find any fitting Bios for my Laptop anymore so i cant just reinstall the Bios to make sure things didnt go wrong back then.
Besides that i tryed alot already. Its def. not a Windows thing, since Linux has the same Problems and detects a 780 instead.
I found out, that the Device ID Changed at some Point. It used to be 1199 (GTX870M) but changed to 119F (780M).
Thought about flashing the Vbios, but again, i cant find any vbios for my exact ID's
10DE 1199(F) 7481 1558
Since Flashing the vbios wont change the ID anyways, it wont work i guess.
__________________________
Later i found that thread about "Hacking" a 670..
https://www.eevblog.com/forum/gener...a-cards-into-their-professional-counterparts/
strap resistors correspond to read
5K = 8
10K = 9
15K = A
20K = B
25K = C
30K = D
35K = E
40K = F
ID should be: 1199
But it is: 119F
So if the resistor at the end, which corresponds to 9 @ 10k, just burned and now has 40k+, it should spit out 119F.. if i got that right.(?)
Since its a damn little pcb .. i couldnt find any obviously broken resistor nor capacitor..
And i dont know where could be located at all.
Only thing i didnt get is how the 1's are generated.But since that thread is about an 670 im pretty sure that theres more to know about the 870M,
but i did'nt manage to find any info about the resistors for that card.If anyone knows something more about that, please tell me or just tell me where i could find more bout that topic.
__________________________
Ouh and i checked the Chip on the GPU and it says GK104 which means its a true 870M ..
Also cleaned everything and added new compound aswell as i made sure everything is in place, no loose connections..
Im a bit lost now and dont know what to do.. If you need or want more info just tell me.
Any ideas, any links for a Bios or maybe just verify my thoughts will help.Thanks in advance!! I really cant affort to just give up on that..
PS: Sorry for the novel & the bad spelling, im not good in such forum-post-things..
PPS: As long as the NVIDIA Driver is installed i can game just fine. Doesnt seem like the card is dead at all.
First of all the Specs:
- P170SM-A
- GTX 870M 6gb
- i7-4710MQ
- 2x4gb Kingston Ram
- Win 10 Pro
- ME FW 9.1.0.1120
- BIOS 1.03.11
- EC 1.03.09
The Problem:
- GTX 870M show up as 780M in Bios
- GTX 870M Randomly installs "Microsoft Basic Display Adapter" driver
- Random bluescreens DX_Kernel
- Have to force-install the driver with modded ini (to match ID) every 2 reboots or so
- GPU-Z Shows 0mb Vram when "Microsoft Basic Display Adapter" is applied (Ram dead?)
So, back in '18 i made a bios update to get the key backlight to work correctly.Since then, things changed over time. After some months i got the first bluescreens and then suddenly things added up.
Sadly i deleted the Bios after the Flash and now i cant find any fitting Bios for my Laptop anymore so i cant just reinstall the Bios to make sure things didnt go wrong back then.
Besides that i tryed alot already. Its def. not a Windows thing, since Linux has the same Problems and detects a 780 instead.
I found out, that the Device ID Changed at some Point. It used to be 1199 (GTX870M) but changed to 119F (780M).
Thought about flashing the Vbios, but again, i cant find any vbios for my exact ID's
10DE 1199(F) 7481 1558
Since Flashing the vbios wont change the ID anyways, it wont work i guess.
__________________________
Later i found that thread about "Hacking" a 670..
https://www.eevblog.com/forum/gener...a-cards-into-their-professional-counterparts/
strap resistors correspond to read
5K = 8
10K = 9
15K = A
20K = B
25K = C
30K = D
35K = E
40K = F
ID should be: 1199
But it is: 119F
So if the resistor at the end, which corresponds to 9 @ 10k, just burned and now has 40k+, it should spit out 119F.. if i got that right.(?)
Since its a damn little pcb .. i couldnt find any obviously broken resistor nor capacitor..
And i dont know where could be located at all.
Only thing i didnt get is how the 1's are generated.But since that thread is about an 670 im pretty sure that theres more to know about the 870M,
but i did'nt manage to find any info about the resistors for that card.If anyone knows something more about that, please tell me or just tell me where i could find more bout that topic.
__________________________
Ouh and i checked the Chip on the GPU and it says GK104 which means its a true 870M ..
Also cleaned everything and added new compound aswell as i made sure everything is in place, no loose connections..
Im a bit lost now and dont know what to do.. If you need or want more info just tell me.
Any ideas, any links for a Bios or maybe just verify my thoughts will help.Thanks in advance!! I really cant affort to just give up on that..
PS: Sorry for the novel & the bad spelling, im not good in such forum-post-things..
PPS: As long as the NVIDIA Driver is installed i can game just fine. Doesnt seem like the card is dead at all.
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