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Hi Dennis. I'm Greg, an installation specialist and 9 year Windows MVP here to help you.
Did you try updating the driver for the wireless card from it's manufacturer's Support Downloads web page first?
If so then disable the card and follow the illustrated steps in this link which compile the best possible Clean Install of Windows which will stay that way as long as you stick with the tools and methods given, has zero reported problems, and is better than any amount of money could buy: http://answers.microsoft.com/en-us/windows/wiki...
After install enable the card and expedite all Windows Updates to see if it gives any drivers or enabling Updates to help it work. If the card will not connect then plug in by ethernet cable to get all of the Updates and attempt the steps below.
I'll give you everything possible to try in order of priority so that hopefully something works. If you need help performing any steps I'll be standing by here to guide you:
Enable IPv6 in the network adapter settings: https://www.tenforums.com/tutorials/90033-enabl...
Run the fixit from https://support.microsoft.com/help/929852 (Re-enable IPv6 on all nontunnel interfaces) and reboot.
Right click the network icon in System Tray at bottom right end of task bar to Troubleshoot Problems.
Try powering off modem, router and PC and then restarting in that order with 1 minute in between each.
Try all of these steps: https://support.microsoft.com/en-us/help/10741/...
https://www.kapilarya.com/how-to-reset-network-...
Update your network adapter drivers from the PC maker's Support Downloads web page using the full model number, HP Serial Number or Dell Service Tag on sticker. Compare the latest drivers available for download with the ones presently installed in Device Manager reached by right clicking the Start Menu. Make sure you have the latest BIOS or UEFI firmware, Chipset, Display (Video), Sound, USB3, Bluetooth, Network and all other drivers, or else download and install the latest now.
If you have the latest network driver then try on it's Driver tab also to Roll Back, or Uninstall and then restart PC to reinstall the driver. Try also all older drivers from Update Driver > Browse > Let Me Pick list working backwards.
Go to Settings > Network & Internet > WIfi > Manage Known Networks, highlight and remove the network having problems, restart PC to see if it shows up again.
Try plugging in by ethernet cable to the router to compare, then plug the ethernet cable into the modem (if separate) to see if this might be an issue with the router.
You also are entitled to Support from your internet provider to get online on all devices. This is always included in the monthly bill. If your router is less than a year old they will also Support getting it connected and optimized.
Another option is you could replace the wireless adapter with an inexpensive USB nano adapter like this one: https://www.amazon.com/dp/B011T5IF06/ref=psdc_1...
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.
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