Here’s a short, informative piece you can use for a support page, pop-up message, or script:
Need help choosing a dongle or checking your drivers? Reply below for step-by-step guidance. computer doesn't support miracast
It looks like your computer isn’t compatible with Miracast, the wireless technology that lets you mirror or extend your screen to a TV, projector, or external display without cables. Here’s a short, informative piece you can use
Without Miracast support, you can’t natively mirror your screen via Windows’ “Connect” feature. But with a $30–$50 dongle or an HDMI cable, you’ll get the same result. Here’s a short
Your Computer Doesn’t Support Miracast – Here’s What That Means
