Thank you for trying that, I know it took some time.
So you're still getting code 43 in Device Manager and your 1050 Ti is not recognized ?
What's puzzling is, it was fine for 12 hours then stopped working after a windows update and now doesn't work with a clean windows installation. It could be a coincidence with the update and be hardware failure but let's hope not.
Just to be sure, you're connecting your monitor cable to the 1050 Ti correct ?
Have you tried your 1050 Ti in the 2nd pcie x16 slot ?
Would you have a spare gpu to test with or better yet, can you try your 1050 Ti in another pc ?