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Back in late 2019, my onboard video would not allow more than 1040x680 resolution. SFC /scannow did not find this
I even reinstalled W10. So I ran for almost 2 years on a pair of Diamond USB (DVI) modules.
Turns out another app complained about my Direct X. I ran the standard tool (DXDIAG) to check Direct X and it would not run.
Turns out Direct X had become corrupt and whatever had installed it was no longer on my system (lost). A download of direct X from M$ and all fixed
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