Never experienced this before. Possible long post....
Replaced a faulty Radeon RX 570 with a GF 6050 Super. Did everything by the book - removed all trace of the Radeon drivers with DDU in safe mode and ran a reg cleaner. Installed the new card and everything worked perfectly. Ran 3DMark and results were as expected. Then I restarted and Windows would not load - got a generic "select valid boot device" type error. Checked all cables were firmly in place, but error remained. Went into BIOS and manually told it to use Windows Boot Manager, then Windows loaded fine. Restarted and same error again....go into BIOS and manually select boot manager...working again....rinse and repeat.
Then I happened to check Windows Update and noticed it wanted to re-download the latest big Windows update (190?..whatever it is) that I already had installed. It also wanted to download some Radeon stuff (I'm assuming it had already queued this up before I installed the new card....or WTF ?
), so I let it do all that as I couldn't seem to cancel the Radeon updates. Restarted - no more boot errors. Everything seems fine now. Double-checked and it doesn't actually seem to have installed any Radeon drivers, so I assume it saw the error of its ways. It's sitting here running 3DMark and PCMark on repeat and no issues.
Was there maybe something in the big Windows updates that is specific to Radeon / GeForce and after the swap and it had to re-install? And could this have caused the Windows boot issues? I'm just concerned I have bigger issues than the faulty RX 570 I swapped....even though it seems to be stable now.
Thanks for reading!
EDIT: Forgot to mention, no overclocks whatsoever.
Replaced a faulty Radeon RX 570 with a GF 6050 Super. Did everything by the book - removed all trace of the Radeon drivers with DDU in safe mode and ran a reg cleaner. Installed the new card and everything worked perfectly. Ran 3DMark and results were as expected. Then I restarted and Windows would not load - got a generic "select valid boot device" type error. Checked all cables were firmly in place, but error remained. Went into BIOS and manually told it to use Windows Boot Manager, then Windows loaded fine. Restarted and same error again....go into BIOS and manually select boot manager...working again....rinse and repeat.
Then I happened to check Windows Update and noticed it wanted to re-download the latest big Windows update (190?..whatever it is) that I already had installed. It also wanted to download some Radeon stuff (I'm assuming it had already queued this up before I installed the new card....or WTF ?

Was there maybe something in the big Windows updates that is specific to Radeon / GeForce and after the swap and it had to re-install? And could this have caused the Windows boot issues? I'm just concerned I have bigger issues than the faulty RX 570 I swapped....even though it seems to be stable now.
Thanks for reading!
EDIT: Forgot to mention, no overclocks whatsoever.
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