I was installing a game on my PC when I left it open, and when I returned, I was greeted by a blue screen. Now, I can't get out of the BIOS, and my SSD doesn't show up as a bootable device. When I enable CSM, the SSD appears, but I just get a black screen with a white bar in the corner when I try to boot from it. I can boot from a USB and see my SSD partitions in the Windows installation, which makes me think of getting a 256GB SATA SSD and installing Windows there to troubleshoot whether the issue lies with the SSD or the Windows installation itself.
2 Answers
It sounds like you should keep your BIOS settings in UEFI mode rather than turning on CSM. Sometimes, Windows 11 doesn't play nice with CSM mode. You might want to try doing a startup repair using your Windows installation disk. Here's a guide on how to do that: [Startup Repair Guide](https://support.microsoft.com/en-us/windows/startup-repair-85deb0b9-fa3d-44a3-a3d0-d0f1515c2c9b). It might help get things back on track!
If your SSD only shows up when CSM is enabled, that could indicate a compatibility issue. Try running through the startup repair process, but keep in mind that if it says it can't repair your PC, you might need to consider reinstalling Windows or checking the SSD for faults. It could also be worth running some diagnostics on your SSD if that's an option.
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