i have the same problem with my msi a88x-g45 gaming
cant find the TOLUD settings in Bios
sorry for the bump but same issue
Msi z270-a pro mobo
8gb ddr4
pentium g4620
4* 8gb rx480
1* 8gb rx580
win 7 x64
no tolud setting in bios, there is a 4g cryptocurrency setting that describes itself as allowing you to run several gpu's however with this on the system there is no video out
virtual memory set to 16gb, mines fine with 4 cards but adding the 5th gives error 21
any help would be appreciated
Windows 7 can be very difficult when it comes to going over 4 GPUs. Some people have had success with 5-6, but it's often hit and miss, especially when the drivers for these more recent cards don't support the old 6x GPU mod for Windows.
If you're not a Linux user, I would recommend using Windows 10, or at least Windows 8.1.