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.

When it comes to using a Windows laptop as a second screen for a Windows desktop, the secret ingredient is the streaming standard Miracast, so no cables or connections of any kind are required.

Built into Windows, Microsoft’s Remote Desktop and Remote Desktop Connection apps make it easy to connect to and control a remote PC — when they’re working properly. Here are some common ...