I've got 2 graphics cards - 7970M's. I believe one card is Revision 1.1 and the other one is Revision 1.2 because it has double row of capacitors as described here: http://forum.notebookreview.com/threads/amd-hd-7970m-revision-through-software.788469/
Laptop is XMG P702 Pro (P170EM). I bought it with 7970M (Rev 1.2) from a guy who said he played a game and laptop just went BSOD. Since then, the card doesn't work properly. Win 8 was installed, I removed it and installed Windows 7 so it's easier to boot in Safe Mode.
Things I have tried so far:
- with XMG BIOS (version 1.02.17)
1) BIOS recognizes the GPU - 7970M
2) Safe Mode works, I see the GPU, if drivers installed it is 7970M, if not, then Standard VGA Graphics Adapter, I can run DDU no problem
3) Windows detects the GPU under Display Adapters as Standard VGA Graphics Adapter
4) I have tried different AMD drivers, some of them install the drivers with no problems in Windows and the GPU shows as 7970M with no warnings or such, some show black screen during installation. Clevo 7970M.zip (believe driver is 22.214.171.124) package from Clevo website installs normally and during Windows loading screen, I see the mouse and after few seconds I see the black screen with top left underscore blinking. I also hear the Windows welcome sound. (Tested with Teamviewer autostart from my PC, I see the desktop, but it's like Minecraft, whenever I drag mouse around, it creates some blocks)
- with latest PREMA BIOS (version 1.02.17PM v2)
1) After installing Clevo 7970M.zip driver, laptop boots to Windows and 7970M shows Code 43 in Device Manager.
2) Safe Mode works, DDU too, 7970M shows up when drivers installed, Standard VGA Graphics Adapter when not installed.
Now with the second 7970M... Revision 1.1.
1) doesn't pass POST screen with old BIOS
2) doesn't pass POST screen with PREMA BIOS (I press F2 and it shows as selected, but just hangs on it at that moment)
3) laptop starts beeping and shutdowns
Note: 7970M has been tested in Alienware 17 R1, BIOS shows 7970M, Windows show 7970M, drivers installed, all good.
Question: does Rev. 1.1 work in P170EM? If so, could it be wrong VBIOS?
P.S. After checking out physically 7970M Rev. 1.2, I found everything to be messy around the double row of capacitors, especially one bridge so I decided to remove it and make everything clean, but later I found in the first link I posted, there should actually be a bridge? Acted too fast, stupid... (I have quality soldering station, hot air station and microscope). I didn't examine the GPU at first, I tried all the methods above, didn't work, then I proceeded with desoldering the bridge and trying again the GPU. Didn't work either. I can resolder the bridge if necessary?
I can give you pictures from the GPU's, VBIOS or anything else that you might think could be useful.
If it turns out 7970M Rev. 1.1 needs another VBIOS, I was thinking of getting EEPROM Programmer, desoldering the GPU BIOS chip and flashing new (compatible) one to it. Ideas?
P.S. #2 if anyone could drop a hint on what to physically check on the 7970M Rev. 1.2, that would be great. I googled the black screen problem and could it be that voltage regulator is blown? I don't mind resoldering another one.
just a short thread to give you some inspirations. My setup consists of:
Macbook Pro Retina 15" Late 2013 OSX + Windows 10
EVGA GeForce GTX 960 Superclocked ACX 2
Akitio Thunder2 PCIe Box
Dell U2311H Display
Samsung TV and Onkyo Receiver
XBOX One Controller / XBOX 360 Controller
Apple Thunderbolt Gigabit-Ethernet Adapter
I spend almost 30€ on Adapters and Cables, Crimps etc just to find out that it does not work well and it does not take much to get a sleek and simple design. You just have to be brave enough and willing to cut the Dell PSU
The cut Dell-PSU. White is 12V, black GND, blue needs to be shorted against GND, red is not required and can be cut or isolated. I don't know whats that blank is for, so I just cut it. There is some additional cable from 1x 12V and 1x GND to be connected to the Akitio's Power Supply, I don't use the Barrel-Plug anymore.
I drilled a hole (about 10mm width) right above the Power Connection. Intelligent people put the cable through the housing first, other (like me) have to force it
Cables go under the board, there is about 1 cm of free space. Now it's time to solder the boards power supply. (No pictured)
The tiny pins can be bought at Ebay ("PCI-E Pins"/ "PSU Power Connector Pins"). There are also "Wire End Sleeves"with crimp-able necks available which might work as well but I didn't try them. You might give them a try too
Doesn't look good but fits well. I use the lower plastic parts of one PCI-E 8 Pin Power Adapter to make the Pins fit in there, otherwise they would slip out the plug.
Holes drilled for better cooling. The front Fan is still connected and blows air into the housing. The GPU Fan presses it out through the selfmade holes.
Final and simple Setup, I'am streaming the games over network to my Steam Link. I still need to try if I can connect the TB-Ethernet Adapter to the back of the Akito.