What should I do?

1. Reboot the device: solves 80% of temporary problems 
Check for Windows updates: 
Go to Settings > Windows Update 
Install all pending updates 
Check again after reboot 
2. Run system diagnostics: 
powershell 
msdt /id WindowsUpdateDiagnostic 
3. Symptom-based solutions 
 System runs slowly 
Open Task Manager (Ctrl+Shift+Esc) Check for high resource-hungry processes Open Task Manager (Ctrl+Shift+Esc) 
Check for high resource-hogging processes 
Disable unnecessary programs in Startup Applications 
4. Blue screen/crash issues 
Record the error code (e.g., 0x0000001A) 
Visit Microsoft's support site to find out the meaning of the code 
5. Check for device driver updates 
 Network connection issues 
6. Try network reset: 
Settings > Network and Internet > Network Reset Update network card drivers > Network Reset 
Update network card driver 
7. Advanced Solutions 
System Restore: 
Search and open "Create Restore Point" 
Select "System Restore" 
Select the restore point before the problem 
8. Reset System: 
Settings > System > Recovery 
Select "Reset this computer" 
Option to keep or delete personal files