ROKU has worked perfect on both TV sets for many, many years. Recently, I switched from Internet Explorer (phasing out in 2023) and installed Microsoft Edge (recommended by IE). Immediately lost internet connection to ROKU on both TV sets (Express and Express +). Both read — NO VIDEO SIGNAL in a blue line across tv screen. Have reset Internet router, both tvs and both ROKU sets; unplugged, waited a minute or two and plugged back in. TV screen still shows NO VIDEO SIGNAL !!! Called Internet Provider (ATT) and they can’t find a problem. Says everything is working fine from their end. I’ve gone back into my computer and made sure that my wireless service is “connected” properly to my router. The ROKU letters appear on the tv screen and begin bouncing. Then will connect to the ROKU main screen (showing Roku, Netflix, Zulu boxes plus others) but wont open or connect to anything in ROKU. Placed new batteries in remote. Have a blue dot on ROKU receiver … so it’s seems to be getting sufficient power. Have taken ROKU apart and reconnected everything from beginning per original instructions. Still NO VIDEO SIGNAL appears on both TV screens when trying to connect. !!! What could have changed with ROKU when I switched from Internet Explorer to Microsoft Edge ??? As I mentioned, the ROKU home page will appear (showing ROKU, Netflix boxes, etc … but will not function). So I don’t have access to the ROKU CONNECTIVITY troubleshooters or anything else inside ROKU. The problem seems to be between the internet service, wireless router and the TV sets. Both tvs are doing the exact same thing —both display the ROKU homepage but it does not function, remote won’t open or move around in ROKU and NO VIDEO SIGNAL appears on tv screen in a blue line across screen. Both TV sets are roughly 20-30 ft from the router. Plus, I’ve been using ROKU for years in both tvs … and everything was working fine until I switched to Microsoft Edge. Don’t know what else to check or reset. Can’t figure this one out. Any suggestions ???