Pick what's going wrong. You'll get safe steps to try yourself, in order — and the warning signs that mean it's time to stop and bring it to the shop.
1 · What's the problem?
2 · Try these, in order
General guidance only. If you smell burning, see smoke, or notice a swollen battery, unplug the device and stop using it.
Prevention
Back up
Automatic, with one copy off-site.
Update
Let system updates install and restart weekly.
Protect power
Surge protector or UPS — this is Florida.
Let it breathe
Hard, flat surfaces; no beds or couches.
Lock accounts
Password manager plus two-step sign-in.