Z490 Aqua - various problems

Hello - Below is a copy of a message just sent to ASRock support. I'm panicking a bit, so thought someone here might have an idea as to what's going on:


Hi - Everything seemed good at first, was using onboard graphics.

Started to get blue screens (usually Watchdog Timeouts), nearly always when starting a stress test (Prime95 Small FFTs-AVX off).

I can now invoke a blue screen *every* time, by suspending the computer whilst Prime95 is running. The blue screen comes when resuming. Interestingly, once working Prime95 has worked for hours without problems (as long as computer stays awake). Core temps are around 85 deg C after hours stress testing - the individual cores are within a few degrees of each other.

During one of the reboots the onboard graphics gave artifacts + shaking picture, so I switched to PCIE graphics (damaged cpu??).

The bios settings are default, with no overclocking. The Windows 10 x64 installation is new, as are all the components (except graphics card).

Did a standard Windows memory check (2-pass), which ran through ok. Although not on the qvl, Crucial guarantee memory working with this board.

Z490 Aqua Bios ver. 1.6
Intel Core i9-10900K Processor
Crucial Ballistix DDR4-3200 C16 DC - 64GB
Crucial P5 M.2 NVMe - 2TB * 2 _ Raid0
ASUS TURBO-RTX2080-8G
Corsair AX 1200i, 1200W PSU