By Tech Inferno Fan
We've had a stack of recurring questions from with problems getting a mPCIe eGPU working. This includes GPU-Z not reporting no clock details, error 10/43 or even not being detected at all. Overall it's more troublesome getting mPCIe working than say expresscard or Thunderbolt.
Here's some common problems and some troubleshooting steps to correct them.
Getting a black bootup screen, resolving error 10/43 or ACPI_BIOS_ERROR win bootup messages
Here the BIOS doesn't know what to do when it sees an eGPU. So the solution is to not let the BIOS see it. Do that by setting the delays on the eGPU adapter (CTD/PTD - EXP GDC or CLKRUN/PERST# on PE4L/PE4C). Boot with eGPU adapter in the wifi slot into Setup 1.30 or Windows. Is the eGPU detected?
I'll add that should error 43 continue AND you have a NVidia dGPU as well as NVidia eGPU then it's likely because of having the mobile NVidia and desktop NVidia drivers loaded simultaneously. Proceed to uninstall ALL your NVidia drivers, use "DDU" to clean NVidia registry entries and do a 'clean' install of the latest NVidia desktop driver.
mPCIe port that hosted the wifi card disappears when connecting an eGPU in it's place
Use the Setup1.30 PCIe Ports->enable to enable the missing port.
eGPU does not get detected
Overcome mPCIe whitelisting by booting with the wifi card and then hotswapping in the eGPU. That way the BIOS will enable the mPCIe port to work.
1. Boot with wifi card into Windows, sleep system, swap wifi card for mPCIe eGPU adapter and ensure eGPU is powered on, resume system. Do a device manager scan in Windows. Is the eGPU detected?
2. Boot with wifi card into Setup 1.30 *carefully* hotplug the eGPU adapter in place of wifi card. Hit F5 to rescan the PCIe bus. Is the eGPU detected?
If this enables detection then avoid this tedious hotswapping by seeking a unwhitelisted modified BIOS for your system OR test the Setup 1.30's PCI ports->undo_whitesting feature.
eGPU still not detected - set the PSU to be permanently on
The latest EXP GDC and BPlus eGPU adapters try to manage the PSU to only power on after they detect a signal. This can cause a race condition where the eGPU isn't ready to go when the CLKRUN signal is asserted.
Avoid this by jumpering the PSU so it's permanently on rather than being managed. Depending on the PSU you are using refer to the following doco on how to do that:
eGPU still not detected - a non-standard mPCIe implementation by your vendor?
PERST# mPCIe pin 22 may need to be isolated due to a non-standard implementation by your notebook vendor: http://forum.techinferno.com/enclosures-adapters/10812-pe4x-series-understanding-clkreq-perst-delay.html#post142689
eGPU still not detected - faulty hardware?
If you still don't get detection then test the video card and eGPU adapter in another machine to confirm neither is faulty.
NVidia driver stops responding
EXP GDC, PE4H 2.4 and PE4L 1.5 all use a socketted cable and therefore are not true Gen2 compatible device. This error indicates there was transmissions errors.
The solution is either to get a better Gen2-compliant eGPU adapter such as PE4C V3.0 or PE4L 2.1b (both with soldered cable), or downgrade your link from Gen2 to Gen1 using BIOS options or Setup 1.30
Other troubleshooting help resources?
See DIY eGPU Troubleshooting FAQ.
3dMark11 Performance Preset Benchmark: http://www.3dmark.com/3dm11/11262792
1.) Lenovo u310 (I have a Core i3 - Ivy Bridge, 8GB RAM)
2.) 65CN99WW unwhitelisted.
3.) eGPU (I used a EVGA GTX 750 Ti from another computer I had).
4.) EXP GDC mPCIe Edition adapter (got from eBay - banggood seller).
5.) ATX power supply (I used a 600W PSU from another computer I had).
6.) USB wireless.
7.) External monitor, keyboard, and mouse.
1.) Obtain and install a unwhitelisted BIOS. If you are unable to obtain a unwhitelist BIOS, I think it might be possible to bypass it with Tech Inferno Fan's Setup 1.x (may need confirmation as I haven't used it myself yet.)
2.) Shutdown computer and remove all USB devices, ethernet cables, power cables, card reader cards.
3.) Remove mPCIe wireless card and detach antennas.
4.) Attach EXP GDC external mPCIe cable to the former wireless slot and screw down.
5.) Attach HDMI end of the mPCIe cable adapter to the EXP GDC device.
6.) Attach graphics card to the EXP GDC device (I moved my laptop off the desk and onto the side shelf to make room on the desk for the monitor/keyboard/mouse).
7.) Using the power cable adapters that came with the EXP GDC device, I hooked in my ATX power supply's 20 pin and CPU 4 pin cables. Then hooked the other end (8 pin) into the EXP GDC device. My EVGA 750 Ti also required that I use an additional PCIe power cable (6 pin) in the top of the card.
8.) Then I attached my misc devices (HDMI monitor, USB keyboard/mouse/wireless adapter), and hooked in my PSU and powered it on (below is image of final product, also moved HDMI cable out of the way).
9.) Power on your computer and let it install the standard VGA drivers and then install your drivers (I didn't have to go in the BIOS for any graphics settings, which it doesn't have anyways, nor did I have to disable iGPU in Device Manager before the card was added).
I found that most games will play on med settings with about 45 FPS with this particular card.
BDO: Upscale on - Anti Aliasing on - SSAO off - med settings.
Skyrim: Med-High settings.
Fallout 4: Med settings.
(EDIT 5/19/2016) > Images added.
I want to share the modded Bios I created for the Acer Aspire E5-572G notebook.
The official bios 1.09 was used as a base.
I'm offering three flavours: Microcode 01, Microcode 07 and Microcode 21.
Microcode 21 is the latest available microcode, this is the Bios you want to use unless you want the special properties of the other microcodes.
Microcode 07 is the latest microcode that allows using the full turbo clock speed on all cores (using single core turbo with all cores).
Microcode 01 is the one you should take if you want to try this. I wasn't able to get it to work on mine (i5 4210m, HM86), but your mileage may vary.
In case you want to always use an older microcode, I'm offering a script for windows that'll keep the OS from using a newer microcode (compatible with Windows Vista to Windows 10). Frequency and other things can be set up with ThrottleStop (use the latest version).
I've also included an overclocking enabled ME firmware that should (hopefully) allow overclocking on the HM87 equipped notebooks.
There are two flavours of this notebook available: Ones that use the HM87 chipset and others that use the HM86 chipset. Overclocking is only possible with HM87 as HM86 isn't capable of overclocking (tested it myself).
Additionally I offer a collection of Bios, EC, ME and FD files of this device, in case anyone wants to experiment with these for a bit (EC Modding, etc.).
I will update this bios in case there are newer parts available.
Any feedback is welcome!
-Advanced Bios Options unlocked (Advanced, Power tabs and additional options in the existing tabs)
-Nvidia 840M/940M VBioses replaced with adapted 940MX VBios with unlocked TDP Limit, unlocked Boost Table and some OC (1306,5MHz GPU/1070MHz Memory - with general usability in mind) + all voltage sliders unlocked
-Intel Management Engine: Updated to 188.8.131.522 + All Locks Unlocked + Overclocking Enabled For HM87 Notebooks + PAVP (Protected Audio/Video Path) Enabled
-Flash Descriptor unlocked
-Microcode updated to version 21 (respectively downgraded to 07 and 01)
-Intel GOP Driver updated to 5.5.1033
-Intel VGA Bios updated to 1042
-Intel RST OROMs updated to 184.108.40.2065
-Realtek Lan OROMs updated to 2.037/2.64
-Applied a few useful BIOS patches by CodeRush (Unlock CPU Power Management Register (useful for Hackintosh Users)/Disable BIOS Lock/Disable SMI Lock)
1. Copy the BIOS file to an empty and with FAT16/32 formatted usb stick.
2. Unplug the AC adapter.
3. Remove the battery of the notebook - you can unlock the battery on the backside.
4. Plug in the USB flash disk.
5. Press and hold <Fn> and <Esc>, and then plug in the AC adapter while still holding <Fn> and <Esc>.
6. Press the Power button. You can now stop holding <Fn> and <Esc>.
7. The BIOS flash should now begin, the fans will spin up at max speed and the power led should blink. It should take between one to two minutes.
8. After everything is done, you can reinsert the battery and go to the BIOS (F2). There you may want to change some settings (the BIOS flash erases all previously chosen settings).
Recommended Bios settings:
F12 Boot Menu ---> Enabled
D2D Recovery ---> Disabled
Boot Configuration: Numlock ---> On
Thermal Configuration: Cpu Thermal Configuration: Bi-Directional PROCHOT# ---> Disabled
Chipset Configuration: RTC Lock ---> Disabled
Chipset Configuration: IFR Update ---> Disabled
Chipset Configuration: BIOS Lock ---> Disabled
ACPI Table/Features Control: TCO WatchDog Support ---> Enabled
ACPI Table/Features Control: WatchDog ACPI Table ---> Enabled
ACPI Table/Features Control: ACPI Memory Debug ---> Disabled
ACPI Table/Features Control: PEP Graphics ---> Disabled
Extended ICC: Use WatchDog Timer For ICC ---> Enabled
Extended ICC: ICC Locks after EOP ---> All Unlocked
User Access Level ---> Full
Wake on LAN ---> Disabled
Advanced CPU Control: xAPIC Mode ---> Enabled
Advanced CPU Control: Package C-State Demotion ---> Enabled
Advanced CPU Control: Package C-State Un-Demotion ---> Enabled
Advanced CPU Control: ACPI 5.0 CPPC Support ---> Enabled
Advanced CPU Control: ACPI 5.0 CPPC Platform SCI ---> Enabled
Advanced CPU Control: Package Power Limit MSR Lock ---> Disabled
Advanced CPU Control: Long Term Power Limit Override ---> Enabled
Advanced CPU Control: Long Term Time Window ---> 128
Module names (for replacement/update):
GOP Driver: 7755CA7B-CA8F-43C5-889B-E1F59A93D575_256.ROM
Intel RST: 382F560D-17A9-4887-BD9C-EB439C1CC482_1654.ROM and 501737AB-9D1A-4856-86D3-7F1287FA5A55_1781.ROM
Intel VGA Bios: 8DFAE5D4-B50E-4C10-96E6-F2C266CACBB6_1743.ROM
Nvidia 840M VBios: D336DBCB-33C1-4D15-A06F-C3FF405C6A68_1749.ROM
Nvidia 940M VBios: C09F4207-D557-47D0-A4B5-1E4B6459E519_1761.ROM
Realtek LAN: 0A33D14A-7B60-4C58-9194-DED0812F9B2B_1767.ROM and E8991F69-D813-4116-A2C2-61E304ECBD72_1533.ROM
Intel Microcode (integrated in file): PADDING_2702.ROM
Management Engine: Integrated in BIOS image, HEX Editor needed for replacement
-Donovan6000 for his very helpful guides and insights on Insyde bios modding
-Andy P whose PhoenixTool I used to replace the modules
-Plutomaniac for providing the used Intel ME firmware and the Intel ME System Tools to properly configure it for this notebook
-Ultrax5 from TechInferno for providing his OC enabled ME firmware for 8-series systems which I used as a reference to unlock the feature for this notebook
-SoniX for his Intel VGA Bios update guide and the OROM, Microcode and Intel VGA Bios database he maintains
-Pacman for sharing the latest Intel RST 220.127.116.115 OROMs
-CodeRush for providing the included BIOS patches
-WerePug from overclock.net for providing the way to unlock the Nvidia VBIOS voltage sliders for editing in Maxwell II BIOS Tweaker
-The author of the Maxwell II BIOS Tweaker which I used for editing the Nvidia VBioses
-All the other people who shared the used OROMs/Microcodes/Firmwares/Useful Information etc.
-13.09.16: 1.09a - Initial release
Unlocked a few more options that I missed before - everything that can be unlocked should be available now
Overclocking enabled ME is now included by default (no disadvantages for HM86 notebooks)
Applied a few useful BIOS patches by CodeRush (Unlock CPU Power Management Register (useful for Hackintosh Users)/Disable BIOS Lock/Disable SMI Lock)
Changed Nvidia GPU idle voltage from 0,94V to a more correct value of 0,76V - thanks to Maison1 from win-raid.com for bringing this matter to my attention
Unlocked all sliders in the Nvidia VBIOSes for editing with Maxwell II BIOS Tweaker - thanks to WerePug from overclock.net for posting the way to do this
Acer Aspire E5-572G - BIOS 1.09c - Microcode 01
Acer Aspire E5-572G - BIOS 1.09c - Microcode 07
Acer Aspire E5-572G - BIOS 1.09c - Microcode 21
DeleteMicrocode Script for Windows
Acer Aspire E5-572G BIOS-ME-EC-FD Collection