STOP!   You can't roll back to BIOS version 1.0.2.  Most recent XPS 8930 BIOS updates prohibit rolling back to earlier versions, and you could brick the motherboard by trying. The support page says: "Once the BIOS is upgraded to version 1.1.6 or later, you cannot downgrade".   Even if you don't brick the motherboard, you'd lose all of the hardware/performance fixes and security updates that have been made since 1.0.2 was released in 2017. It's time to find a new card...
It came with a thunderbolt card that never worked right.  recently, i removed it to install a magewell hdmi input card that i previously was using without problems on an xps 8920.  However, when it won't work; in fact, windows crashes before loading whenever it is installed physically.  if i remove it, it boots perfectly.  this was after i had to do a factory reset but was thankfully able to back up my data. however, my system works now but i cant use the card.  i have tried to remove all traces of the thunderbolt card but i think something may be amiss. I did a cmos reset but that didn't work.   of course, my system is out of warranty. any assistance on possible solutions would be greatly appreciated  
8930 PCIe card issue / mfr installed thunderbolt card removed and can't use