If you're using adapters, those could be the culprit as well-either you have a faulty dongle, or you're using it in a way it wasn't intended to be used. Remember, not all cables are created equal: if you're trying to run a 4K display at a high refresh rate, you'll need an Ultra High Speed HDMI cable, rather than an older High Speed model. If you're using DisplayPort, make sure it's certified by VESA (Opens in a new window) for HDMI, it may have a certification label on the packaging you can scan with the HDMI Cable Certification app for iPhone (Opens in a new window) or Android (Opens in a new window). In addition, make sure your cable has the right specs for the job. You might also try a different cable type-say, an HDMI cable instead of a DisplayPort cable-to see if that solves the issue. If you have any extra cables lying around, try another one-maybe the cable you’ve been using is damaged, or one of the ports is malfunctioning. If you have a graphics card, your monitor should be plugged into that, not the HDMI port on your motherboard.

How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.How to Free Up Space on Your iPhone or iPad.How to Block Robotexts and Spam Messages.

Post its for computer screen