LG Monitor: Mild Hissing Sound & Power LED Blinking

[probuddha]

I have an almost 10 yr old LG LCD monitor L177WSB

Of late I have noticed that when I turn on my system, the power button LED starts blinking fadely with a blue color. Under normal conditions, the LED stays a steady Yellow on Standby and Steady Blue on being powered on.

I have to press the power button quite a few times before any display comes up and every time there is some sort of display on the monitor, like the Mobo Model No, Windows Boot Screen and when the monitor is finally on, I hear a mild hissing sound coming from the back of my monitor. The power button LED finally goes to a steady blue when the monitor is up and running.

Sometimes, when I try to turn on the monitor, I get White and Green Flashes on the screen and my PC freezes (I am unable to reset it), the only way is to switch it off from the mains and turn it back on.

I checked the Event Logs, and found these errors logged

The following boot-start or system-start driver(s) failed to load: atc

Event filter with query "SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 99" could not be reactivated in namespace "//./root/CIMV2" because of error 0x80041003. Events cannot be delivered through this filter until the problem is corrected.

So before I invest in a new monitor, I wanted to know if this event log indicates a problem with the monitor itself or with its drivers

 

[.vodka]

Monitor PSU probably went bad, most likely the capacitors failed... you could open it up, check for that and replace them if you're handy with the soldering iron. Either that or the logic board is also going bad.

I'd invest in a new monitor, it's been 10 years and panels have improved A LOT.



Your PC freezing has nothing to do with the monitor.

 

[digitaldurandal]

That event log has nothing to do with your monitor. That is a WMI failure. You probably should look for a crash report. You'll need to download some specific tools to read it and it may or may not be helpful.

%SystemRoot%\MEMORY.DMP

https://developer.microsoft.com/en-us/windows/hardware/windows-driver-kit