I have recently Purchased a OMEN 870-104na and I am using the display ports to connect three screens which is all great. However when the computer goes to sleep and i try to kick it out of sleep, the monitors do not respond but the desktop it self wakes up as all the lights come on and fans come on. I have tried all of the diagnostics and everything that i found in the other HP Forums on why it may not work and it has still made no difference. So it requires me to hold down the power button and reset from a cold restart for everything to start working again which is frustrating.
AS we have properly understood you are facing issue in the OMEN 870-104na
Restarting your computer erases all information in the computer's memory, which might restore functionality. Before performing these steps, be sure to restart your computer to attempt to resolve the issue.
If you have a notebook computer that cannot return from sleep mode, first make sure it is connected to an AC power source and the power light is on.
Even though i restart and make sure all the options which are supposed to solve the issue are saved. And i checked the settings which are saved. But when i put it into sleep mode again, it still makes no difference i still have the issue with the desktop waking up but no signal to the screens, I have read somewhere else that even though the desktop wakes up the grpahics card may not. So this is still an issue.