TL;DR
I recently purchased an Asus GTX1070 which booted, POST'd (sort of) but would not load Windows 10. It was defective and a replacement sorted it out.
The most important symptom is the BIOS/UEFI POST being in the wrong (non-native) resolution.
Long version:
I tried 30+ hours of changing settings, trying different things.
I recently purchased an Asus GTX1070 which booted, POST'd (sort of) but would not load Windows 10. It was defective and a replacement sorted it out.
The most important symptom is the BIOS/UEFI POST being in the wrong (non-native) resolution.
Long version:
I tried 30+ hours of changing settings, trying different things.
- turning off Windows Fast Boot
- UEFI only booting
- non-UEFI legacy / compatibility only booting
- Isolating the hardware in two machines to bare minimum (disconnecting SATA devices etc)
- Two fresh installs of Windows 10
- At least 4 different versions of the Nvidia Drivers, using DDU to uninstall the previous drivers in Safe Mode between installs.
- Modifying window's power settings to maximum performance
- turning off onboard Audio in BIOS
- turning off VT-d in BIOS
- running on a known-good installation of Windows 10, as well as a fresh install (twice)
- resetting BIOS to defaults by clearing the RTC clock jumper and the RTC battery
- Pulling and replacing RAM
- Upgrading the Motherboard BIOS on both tested machines to the latest official bios versions.
- Checking with the official ASUS tool that the Video Card VBIOS was up-to-date (which it was)
- Updating Windows 10 to version 1709 (Fall Creator edition)
- Changing the monitors, and trying different HDMI and DVI-D cables.
Nothing worked to alter the outcome.
In the end it was just defective card.
My motherboards were an Asus P8Z68-M PRO and a Asus H97-M Plus
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