XBOX ONE S TURNS ON THEN OFF General Troubleshooting

Internal Power Supply Unit (PSU)

The Xbox One S uses an internal switching power supply that frequently suffers from failed capacitors or shorted MOSFETs. When these components degrade, the PSU cannot maintain a stable 12V rail under the initial boot load, causing the console to trip its over-current protection and shut down immediately. Replacing the internal module restores stable power delivery to the motherboard.

SKU: PA-1131-13MX

Internal 2.5" SATA Hard Drive

If the mechanical hard drive develops bad sectors on the system partition or the file system becomes corrupted, the Xbox may hang during the initial 'Green Screen' boot phase. This hang often results in a software-initiated shutdown to prevent data corruption. Replacing the drive and performing an Offline System Update (OSU) via USB is the standard resolution for this failure mode.

Internal Cooling Fan

The console's firmware performs a 'heartbeat' check on the cooling fan during the power-on self-test (POST). If the fan is seized or the tachometer signal is missing due to a motor failure, the system will shut down within seconds to prevent catastrophic thermal damage to the APU. A new fan assembly ensures the BIOS receives the required RPM signal to continue the boot sequence.