Problem summary
The Dell Inspiron 14 5430 i5-1340P has two USB-C ports: one Thunderbolt 4 (left side, supports charging and data) and one USB 3.2 Gen 2 (right side, data only). USB charging not working after reboot typically means the Thunderbolt 4 USB-C power delivery is not initializing correctly after Windows restart. The port may charge when the laptop is powered off but stops charging after Windows boots.
The right USB-C port on the Inspiron 14 5430 is data-only and does NOT support USB Power Delivery charging. Only use the left Thunderbolt 4 USB-C port for charging.
Fixes
Update Intel Thunderbolt Firmware via Dell SupportAssist: Open Dell SupportAssist and run a full update scan. Install any pending Intel Thunderbolt Firmware or Dock Firmware updates. The Intel Thunderbolt 4 controller on the Core i5-1340P (Raptor Lake) requires the Dell-certified Thunderbolt firmware for correct USB Power Delivery initialization sequence after Windows restart. A firmware mismatch causes the Thunderbolt USB-C PD controller to not assert the 5V bus correctly after POST, resulting in the charger not being detected by the connected USB-C power adapter.
Disable USB Selective Suspend: Open Power Options → Change plan settings → Change advanced power settings → USB settings → USB selective suspend setting and set it to Disabled. On the Inspiron 14 5430, USB Selective Suspend can suspend the Thunderbolt USB-C power delivery controller during the Windows startup phase. When the charger connection is re-evaluated after suspend, the PD handshake may fail and the port remains in data-only mode rather than charging mode until manually disconnected and reconnected.
Update Dell BIOS: Download the latest BIOS for the Inspiron 14 5430 (Model P148F) from Dell Support. BIOS updates for the Inspiron 14 5430 include USB Power Delivery initialization fixes that prevent the Thunderbolt USB-C controller from missing the PD negotiation step during Windows boot. The BIOS update is applied using the downloaded .exe installer running in Windows.
Per Amira Syuhada, graphic design student using Dell Inspiron 14 5430 with a USB-C hub: “The left USB-C port stopped charging after every restart on the 5430. Updating Intel Thunderbolt Firmware through Dell SupportAssist and disabling USB Selective Suspend fixed it. Reconnecting the charger after boot was no longer needed.”
Frequently Asked Questions
Why does the Dell Inspiron 14 5430 USB-C port not charge after reboot?
The Intel Thunderbolt 4 USB-C power delivery controller does not reinitialize correctly during Windows startup without the latest Dell Thunderbolt firmware. Update via Dell SupportAssist and disable USB Selective Suspend in Power Options to prevent the PD controller from being suspended during boot.
Which USB-C port on the Dell Inspiron 14 5430 supports charging?
Only the left Thunderbolt 4 USB-C port supports USB Power Delivery charging. The right USB-C port is USB 3.2 Gen 2 data-only and does not support power delivery. Always use the left port for USB-C charger connections on the Inspiron 14 5430.
What wattage USB-C charger does the Dell Inspiron 14 5430 support?
The Inspiron 14 5430 USB-C Thunderbolt 4 port supports up to 65W USB Power Delivery charging. A USB-C charger rated at 45W or higher will charge the laptop, though at a slower rate than the included Dell barrel plug charger at 65W. Use a USB-C charger rated at 65W for the fastest USB-C charging speed on the Inspiron 14 5430.
Does the Dell Inspiron 14 5430 support USB-C DisplayPort?
Yes. The Thunderbolt 4 USB-C port on the left side supports DisplayPort Alt Mode up to 8K resolution at 30Hz or 4K at 60Hz. Connect a USB-C to DisplayPort cable or a USB-C to HDMI adapter to output video to an external display. The right USB-C port does not support DisplayPort output.
Conclusion
USB port not charging after reboot on the Dell Inspiron 14 5430 i5-1340P is fixed by updating Intel Thunderbolt Firmware via Dell SupportAssist and disabling USB Selective Suspend in Power Options. Update the BIOS from Dell Support for the Inspiron 14 5430 Model P148F for a complete platform-level fix of the USB Power Delivery initialization issue during Windows startup. Always use the left Thunderbolt 4 USB-C port for charging, as the right USB-C port is data-only.
Ryan holds a Computer Science degree and has over 20 years of hands-on experience with PC hardware, software, and driver troubleshooting. He is the author behind softwaredriverdownload.com, where he helps everyday users fix driver issues quickly and accurately. Ryan has personally tested most of the fixes on this site across a range of Windows 10 and Windows 11 machines.
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