Back up your photos and files so a dead computer isn't a disaster

Steps

1. Option A — OneDrive (built into Windows). Click the cloud icon near the clock (or search OneDrive), sign in with your Microsoft account, and turn on Back up folders for Desktop, Documents and Pictures. 5 GB is free; if you have lots of photos, the paid Microsoft 365 Basic plan gives 100 GB for a few dollars a month.
2. Option B — an external drive. Buy a small external SSD or hard drive (bigger than the space used on your C: drive). Plug it in, then Settings → search File History → Backup options → Add a drive → turn on Automatically back up my files. Leave the drive plugged in.
3. Either way, check it once: open OneDrive in a browser, or the external drive in File Explorer, and confirm your recent photos are actually there.
4. Phones: iPhone → Settings → your name → iCloud → Photos on. Android → Google Photos → Backup on. That covers the photos that only exist on the phone.

If that didn't work

• If the computer is already refusing to start and the files aren't backed up — don't keep trying to boot it. The drive is usually readable; that's a data recovery visit.