On macOS, go to “System Settings” > “Displays” and hold Option to reveal the “Detect Displays” button. Make sure the correct ...

No video or wonky picture on your second or third monitor? Here’s our troubleshooting and repair guide for some of the most common multi-screen issues.

I have about 2 year old ViewSonic's LCD monitor (20.1") that is capable of resolution 1600x1200. For about a week it has shown strange green vertical line that goes almost the whole screen height ...

Dual monitor freeze problem, possible causesOver the past few weeks we have been investigating an issue affecting users that have dual display set-ups, most prominently when used in conjunction ...

I have a Viewsonic ViewPanel VG171 LCD monitor. The video card on my computer is a Geforce DDR 64MB. When connecting via DVI (digital), there is an occasional "flicker" or "flash". It sometimes ...

The built-in Windows Reliability Monitor remains an oft-overlooked troubleshooting gem. It’s actually a specialized part of Windows’ general-purpose Performance Monitor tool (perfmon.exe ...

Using Windows 10's Reliability Monitor To Track Down Potential Problems Windows includes a built-in tool that can help you spot correlations between recent changes and current system problems.