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‎08-23-2020 10:08 PM

HP Recommended
Product: HP Pro 3420 AiO PC
Operating System: Microsoft Windows 10 (64-bit) 
Good day!

After upgrading the HP Pro 3420 AiO PC to Windows 10, the following problem occurred:

When the device comes out of sleep mode, the test mode of the monitor turns on, starts changing colors (red, blue, white, black) and so on in a circle, only a reboot helps. 
As I understand it, the problem with the driver on the video. I did not find a driver for Windows 10 on the official website, I installed it automatically from the Update Center. Please tell me how to solve the problem. Everything works without problems under Windows 7.
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