Help! I Messed Up My PC Setup and Can't Boot

Be careful though! If this is your first major PC crisis, don’t be too hasty. I recommend booting with an installation media, move your important files to one drive, and then start fresh with a clean install on the other drive. And remember, regular backups are crucial for the future!

Yeah, definitely seconding that idea! Using a Live USB is a great way to access your data safely without risking more issues. Once you've secured your important files, you can think about how to best fix your system.

1. Stay calm and don't rush to make changes. 2. Create a Live USB on a working PC using software like Ubuntu. 3. Boot from that USB and try to mount your system drive. 4. If you access your files (ensure you handle any encryption properly), back everything up before attempting a Windows reinstall. 5. If partitions are missing, you can install something like TestDisk to attempt recovery. If none of this works, consider consulting a data recovery expert.

First off, don't panic! Avoid tampering with the boot sector or attempting a factory restore; that could lead to losing your data. Just because you can't boot into Windows doesn't mean your files are lost. Try creating a Live USB using a friend's computer and a USB drive with UNetBootin (or a similar tool). Boot from it and check if you can access your Windows drive. Your files should be under 'Users/Username' if everything's still intact. Most Live USBs will handle mounting automatically, so you should be good to go!