What should I try next? Moto X4 will not power on - does not fastboot.

I found my phone powered down after a nap. I have been unable to power it back on since.

Things I’ve tried:

  1. Checking the charger works with another phone (my partner also has an X4).
  2. Cleaning the charging port of all debris.
  3. Charging the phone for 24 hours.
  4. Holding the power button down for 40 seconds.
  5. Holding the (-) volume button and power button down for 2 minutes.
  6. I replaced the battery using iFixit moto x4 battery kit. One of the connector locks has broken off so I used a dab of silicone to keep the connector in place.
  7. Connecting the phone to my PC seems to be the only sign of life. The audible connect is heard but the device doesn’t show a connection. However, it does show in the device manager under ports. Looking closely there are three events, one of which is a warning. I’ve copied and pasted the key information below.

Log Name: Microsoft-Windows-Kernel-PnP/Configuration

Source: Microsoft-Windows-Kernel-PnP

Level: Warning

Description:

Device USB\VID_05C6&PID_9008\5&1d9b8640&0&6 was not migrated due to partial or ambiguous match.

Last Device Instance Id: USB\VID_046D&PID_C52F\5&1d9b8640&0&6

Class Guid: {36fc9e60-c465-11cf-8056-444553540000}

Location Path: PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(6)

Migration Rank: 0xF000FFFFFFFF0023

Present: false

Status: 0xC0000719

I am beginning to suspect this phone is now bricked. Seems odd that this would happen during normal use. I suspected the battery was the problem initially because I’ve had this phone a few years and I have definitely noticed the battery life beginning to wain. Thanks in advance for any assistance you are able to provide.

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