Hi, I have problem to wake monitor. - ViewSonic Va2431wm LCD Monitor

Sounds like you may have a bad connector. Make sure it fits snugly in the pc and the back of the monitor. If you still get no input try a different connector

I’m happy to help further over the phone at https://www.6ya.com/expert/tami_f8d2d553d5094045

If your trying to wake your computer/monitor up try pressing a button on your keyboard or move your mouse. This should wake up both your monitor and computer.

dont know how old monitor is but it may be time for an upgrade OR the pc/laptop/desktop? may need some setting changes for your wake time, sleep time, intervals, etc.? Sometimes if laptop,, you have to tap the power button to wake up after extended sleep times.

Hi
To check the monitor, Please remove the VGA Cable from the back of the Cabinet or Tower. The connector will looks Blue in Color. Monitor will pop up with Connect cable message. If you see that message it shows the monitor is fine.
Please check the Motherboard connections
Tx.

slapping it around usually works. "just a joke!"

tapping a few keys on your keyboard and moving the mouse will usually wake the monitor from sleep mode.

Check the inverter and backlight bulbs.

Hi

Pls check the power management properties in device manager to check if the option to wake the computer from sleep for the keyboard and mouse are enabled.
You may also try to change the power plan or create a new power plan and check if you are able to wake the computer from sleep.
If this problem started a few days back, then you may try to do a system restore.

Hi

If only the monitor is going to sleep, then it could be a problem with the connection from the monitor to the computer or with the cable.

If the computer goes to sleep and if you are not able to wake it from sleep then check the sleep mode settings and also the power management settings for the keyboard and mouse.
You may also do a system restore if you are not able to wake the computer from sleep.

Ok sounds to me like a power supply problem.. this a a fairly common symptom. I suggest that as a temporary fix you set the monitor to NOT turn the power off to the monitor in sleep mode if possible, in your power settings for the monitor.