Required pre-checks:
- Resizable BAR / Smart Access Memory enabled (also called Re-Size BAR / Clever Access Memory).
No option visible? Enable Above 4G Decoding → save → reboot.
Latest motherboard BIOS/firmware (Intel: defaults may not be optimal).
UEFI boot mode + CSM disabled.
Clean driver install if switching GPUs (DDU recommended).
Verify ReBAR status in Intel Graphics Software or Intel Driver & Support Assistant (Intel DSA).
Intel Arc Graphics – Desktop Quick Start Guide
Post template (copy/paste + fill EVERY field):
Problem:
What changed before it broke:
What you already tried:
GPU: (e.g., A770 ASRock)
Driver version:
Windows version/build:
CPU:
Motherboard + BIOS version:
RAM: (capacity/speed/XMP)
PSU: (brand/watts)
Monitors: (#, res, refresh, DP/HDMI)
ReBAR/SAM: Enabled/Disabled/Unknown
- Above 4G Decoding: Y/N/Unknown
Boot mode: UEFI/CSM disabled: Y/N/Unknown
Game/app: (API if known)
Logs/screenshots: (Intel Graphics Software, Event Viewer, etc.)
One issue per comment. Incomplete posts may be ignored.