All of a sudden I find my internet doesn't work after leaving the computer for 7-8 hours I come back and can't get online. My computer is brand new and came with onboard wifi but it was always cutting out on me so I bought a USB wifi adapter. My wifi icon says connected but obviously isn't. I disconnect and reconnect and it says connected but isn't. I disable it and try the onboard wifi and it won't connect either. I go down and the hardwired computer is working and everyone can connect to their tablets and phones so it is not the modem/router. Finally the fix every time is to reboot the computer and they work. Why would this be occurring? I run Win 10 Home 64 1709. I have latest drivers for both wifi devices. Any insight? Thanks.
What about the ISP? Is it the same used for both WiFi Adapters? What Security do you use for the Modem-Router? How you'd configured that? If the connection problem is from one computer only, as you claim, you still have some config problem in either your computer and/or Modem-Router! DHCP Server needs to be enabled in Modem-Router and it's recommended that you assign some IP Address Range for that like 192.168.1.100 to 192.168.1.250 (you LAN may run on a different IP Range!). For all hard-wired LAN Computer, it's recommended to use fixed IPs, something like 192.168.1.2 to 192.168.1.99, which help to solve problems. for the computers and Devices connected WiFi to your Network, I would use them to allow connections by using the Mac Addresses and not allow by Password only on an open WiFi Network. That would eliminate the unauthorized use of your WiFi Network by any Stranger. It's a one-time config of the Access to your WiFi within the Modem-Router, the user didn't need to know anything more as just the WiFi Password! From what you wrote, I believe that your Config of the Modem-Router isn't done properly, and that's where you have to start!
It is configured the same way as it has been for past 20 years...Windows firewall..router firewall off. IP's are in range. It has worked fine for 20 years this way. Just started this sporadically. Now since I posted last night it was over 12 hours till I got on the next time and it worked. I have no idea why.
And you use a 20years old OS as well??! Because nothing has changed! What happens to an OS (for example) may happen to other Software and Hardware as well, there changes all times in the past and the future! Nothing to tell or try to help more!
What I'm saying nothing has changed anytime recently. Same router/modem combo..Same Wind 10 Home...Same ISP...Same Windows Firewall.... I never have messed with any settings in router..Never had to. You plug it in and it works...It hasn't done it again since posting but prior to then 3X.
With such outcome, it simply states that something is not 100% correct within the Settings/Configuration of the computer used and/or the Modem-Router. It also could be triggered by some Application on the computer used. Don't ever think that everything has to work as in the past after any new install, an update of the OS or whatsoever has been done, for now, and in the future! If you think that's so, and you know it all: Good Luck! Bye!