How to deal with the flower screen, vertical line and horizontal line appearing on the standard screen?

1. The splash screen (left picture) appears on the startup screen after power-on. It may be due to the resolution setting of the BIOS, and the other is the poor connection of the dot screen line.

2. After the power is turned on, a vertical line or a horizontal line appears on the startup screen (picture on the right), it is determined to be a quality problem of the LCD screen.

3. After power on, there will be a blank screen somewhere in the startup screen. When this phenomenon occurs, the LCD screen malfunctions.