Monitor goes to sleep and doesn't wake up, don't know if this is a hardware problem though.

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buccaneer

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Greetings :)
I have a personal desktop and a work laptop, and the problem is with my desktop's monitor. When I work, I shut down my personal desktop but the monitor is connected to a UPS back up which stays on because my wireless modem that I need for work is also connected to the UPS. I manually switch off the monitor so that its power light turns off, and connect my laptop to the mains electric supply and work. However, after working for 9 hours when I shut down my laptop and power on my desktop and monitor, the monitor refuses to wake up. I have to try switching off the UPS and starting my desktop a few times and after about an hour or more of trying, the monitor finally decides to wake up and function as normal. I have tried some of the tips I have seen online about enabling USB wake up and stuff but none of those options have worked for me. If I leave the entire desktop and UPS switched off for the night, in the morning the monitor works fine, it doesn't refuse to wake up. But after work, when I turn the desktop on, it just flashes the boot up screen for a second and goes to sleep again. At least, I think it is sleeping as the monitor's power light stays lit up but the screen itself is blank/dark. I am using Windows 10 Pro, with AMD Ryzen processor and 32 GB RAM and my monitor is a Samsung. I never had this problem with my previous desktops, maybe it is a Windows problem now or maybe the monitor itself, I don't know. If someone could help me work this out so that when I turn my desktop after I finish work, the monitor starts working normally immediately, I would be very grateful. Sorry if this should have been posted in the Hardware section, I apologize. If more info about my PC is required, do tell me please. I am writing this after work today, and it took about 1 hour and 10 minutes of switching off everything and starting up again to get my monitor working. Hopefully someone here can help me rectify this problem. Thank you so much for taking time to read my long winded post.
 
Yikes. I posted in the wrong place. I am pretty sure I clicked on Win 10 section. Could someone in authority please move this thread? My apologies.
 
The first thing I would do is swap monitors and see if it still happens. If you don't have or cannot borrow a monitor from someone, most TVs made in the last 10+ years support computer input.

Note too that some UPS have a master outlet that controls the other outlets. When the UPS senses the device connected to the master outlet is off, it keeps the other outlets off. I have an APC UPS like this and it drove me crazy - until I read the :censored: manual. :oops: This master outlet function can be disabled, or simply don't use that outlet.
 
Oh sir, I have an extra monitor for my laptop which I think I can use to check whether it happens with all monitors or whether my desktop's monitor is faulty. I too am using a APC UPS, but my desktop and monitor are both connected to it, so I think when I turn on the desktop, power is going to the PC and monitor too. At any rate, the monitor's power light does come on. My UPS is APC Back-UPS 1100, I'll see if I can find the manual online. I'll check with my extra monitor tomorrow night when I get off work and see whether that makes any difference sir. I have had the desktop monitor for a long time, from when I was using Windows 7 onward, and never had this problem until I got the AMD processor and put Windows 10 in it. (All my processors until now has been Intel) I'll report back with what I find tomorrow, sir.
 
Okay, I connected the extra monitor from my laptop's dual monitor set up and it didn't work either. It is a Dell monitor and upon connecting it and starting up my desktop, the monitor showed a message box saying it was going into standby mode. I just got the normal desktop monitor to work - after 1 hour and 20 minutes or so of trying. Anyway, it is not monitor specific problem, but something to do with my PC or Windows 10. I also checked my APC UPS and can't find a master outlet. There are three back up outlets and one surge protection only outlet, there's no mention of a master outlet. Still hoping for a cure for my monitor problem.
 
Update: Now my monitor has started blacking out for a couple of seconds every now and then as I am using it, maybe it is going to die on me. :( Or maybe it could be the VGA to HDMI converted that is going to give up the ghost. I have no idea what is wrong. It could even be my Nvidia Graphics card I guess?
 
Connect the monitor that blacks out to your laptop to see if it behaves on the laptop. I suspect it is not a specific monitor that is the problem but either the video card or the converter.

Does the desktop have a video chip? If so, you could remove the graphics card and see if the monitors (Dell and the extra laptop monitor) work.
 
Oh ty sir for the reply. I will get a new converter and see if that rectifies the problem of blacking out, and not waking up problem might hopefully go away too. I dearly hope it is not the graphics card though, as I think graphics cards these days cost a lot. The monitor that blacks out- well, I tried working on it today and it sometimes takes hours before it blacks out for a couple of seconds. I have onboard graphics for the desktop yes, do I have to remove the Nvidia Graphics card for the onboard graphics to work sir?
 
do I have to remove the Nvidia Graphics card for the onboard graphics to work sir?
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I'm not sure. I have only ever added a graphics card to one of the 16 computers I've owned.

Try this before you open up the desktop computer and remove the card: 1. move the monitor display chord from the dedicated graphics card to the onboard chip 2. Turn on the computer and boot into safe mode - that way the Nvidia drivers will not load.
Use the computer for awhile (the display will be larger than you are used to) and see if the black outs occur.

When my Samsung monitor started going black, it didn't turn back on. So your problem is different than mine was - a failing resistor or capacitor in the monitor.
Since 2 monitors exhibit the same behavior on your desktop but not your laptop, we can rule out the monitors having a problem. That leaves the graphics card or the converter as the problem.
 
Well sir, a bit ago, my monitor completely blacked out and I removed the normal monitor and attached my Dell monitor that I use with the laptop and started up again and in the boot screen, which is normally all black with the Gigabyte motherboard logo and stuff, it showed all red with the Gigabyte logo and then it went to stand by mode. So I took away the Nvidia Graphics card and plugged in both my normal monitor and the Dell and neither of them showed anything. Their power light just kept blinking. Anyway, I dusted the graphics card and put it back in and booted up with my normal monitor which worked. I am writing this while using my normal monitor. I don't know why exactly the onboard graphics didn't work when I tried it. I have a miserable 1050Ti Nvidia card, it was bought several years ago and maybe it is failing. I wonder if there's a software to test for possible graphics card failure sir?
 
Oh ty sir for the link. I'll download that program and see what it says about my graphics card.
 
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