topic Help Dual GPU Alchemist and Battlemage Issue in Graphics

Help Dual GPU Alchemist and Battlemage Issue

Wizhhh — Mon, 30 Mar 2026 10:21:34 GMT

This issue happened several times up till now, suddenly arc A750 not detected in task manager, also device manager display adapter, but show up in hidden devices with code 45. I know its not bad connection with pcie slot because when it was detected it function normally. When its single slot it work normally, both gpu is normal. I just shutdown my pc for a while or turn on in next day it wont show up/detected. Happened about 5 times maybe. And also please help directx12 performance with B580 really poor compared A750 in RDR2.

Re:Help Dual GPU Alchemist and Battlemage Issue

Nikhil_Intel — Mon, 30 Mar 2026 16:04:49 GMT

Hello Wizhhh,

Thank you for posting on the Intel Community Forum.

Thank you for clearly explaining the issue — it really helped us narrow this down.

Please try the following steps:

For Arc A750 not detected (Code 45):

Disable Fast Startup in Windows and perform a full shutdown, then power on.
Update your motherboard BIOS to the latest version.
Perform a clean graphics driver reinstall using DDU, then install the latest Intel Arc driver.

For low performance in RDR2:

Switch the in-game Graphics API to Vulkan (recommended for Arc GPUs).

These steps should help stabilize GPU detection and improve performance.

Re:Help Dual GPU Alchemist and Battlemage Issue

Nikhil_Intel — Mon, 06 Apr 2026 07:03:23 GMT

Hello Wizhhh,

Since I haven't received a response from you, I will be closing this inquiry. If you need further assistance, please submit a new question, as this thread will no longer be monitored.

Best regards,

Nikhil

Intel Customer Support Technician