Can't Boot Into OS After Windows Update

Operating Systems & Open Source
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I tried to manually install a W7 Security Update from 2019 and after a required restart to finish installation, my PC is now stuck in Startup Repair every time I boot it up. Startup Repair says it can’t fix the issue and just tells me to shutdown my PC; I’m getting error code 0x490. I’ve never created any restore points or recovery media (genius move, I know, won’t be making that mistake ever again).

A few questions:

  1. Is it possible to remove that update from a command prompt from within Startup Repair or something? Would this even resolve the issue?

  2. Can I simply disable Startup Repair and force windows to boot up?

  3. Can an outdated BIOS version cause issues with Windows Updates? I read on some Microsoft forums that someone had a similar issue to me and updating his BIOS fixed the issue (my BIOS version is from 2013).

Specs:
Asus Sabertooth Z87
i7 4770k (stock clocks)
16GB RAM
GTX 970
Adata SX900 128GB Boot Drive
Windows 7 Pro SP1

2

Update: I fixed it. For some reason, I had to boot into a secondary W10 drive and then it magically switched to my main W7 drive by itself and finished installing the update and now everything is back to normal.

3 Likes
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Your boot loader may have been corrupted