If the screen is distorted or shows "No Signal" after a board swap, the most reliable method is to flash the correct firmware for your panel's resolution.
If restarting the spooler fails, the driver itself may be corrupt. Tp.rd8503.pa671 Resolution Code
Last updated: October 2025 – Compatible with Windows 10, Windows 11, and Server 2022. If the screen is distorted or shows "No
No. This is a system-generated resolution code. However, malware can sometimes mimic error codes. Run a full scan with Windows Defender to be safe. Tp.rd8503.pa671 Resolution Code