Power cycle the Xbox Series X by holding the console power button for 10 seconds, unplugging it for 60 seconds, then restarting
Make sure the console is using the official power cable and is plugged directly into a wall outlet
Disable Instant-On and use Energy-saving mode in Power options
Remove any external USB drives, accessories, or expansion cards and test boot speed
Clear the console cache by fully powering it off and unplugging it briefly
Check for and install the latest system updates
Uninstall recently added apps or games that may be causing startup delays
Reduce the number of startup apps and background tasks
Free up internal storage space
Rebuild the console’s storage by performing a factory reset and choosing Keep games and apps if needed
If boot remains slow, perform a full factory reset
Inspect for overheating and ensure proper ventilation around the console
Try a different power outlet or surge protector
Contact Xbox Support if the issue continues