Why will my computers Wi-Fi NEVER work?

So around 2 months ago m computer all of a sudden began to never pick up Wi-Fi, i was using a USB wireless adapter at the time, and running Windows 7 Ultimate. It all of a sudden wouldn't install the device and whenever it did it wouldn't connect to my home Wi-Fi. My homes Wi-Fi speed isn't the greatest, however my iPhones 4G hotspot is 40MB down and 30UP and i had 'Limited Acess' (Yellow Cone) whenever connecting.

I upgraded to Windows 10 Pro (Legit) and have bought two new wireless adapters, and still getting the same problems.

'Limited Acess'
'Couldn't Connect To This Network'

Whenever i do finally connect, i can load up one webpage in around 10 seconds and then 'Limited Access' occurs again.

I have tried updating drivers, reinstalling and uninstalling everything, restore points, cmd prompt commands, not much is working.

I thought something may be missing within Windows itself but seeing as though i have upgraded i don't see how that may still be an issue (Although i didn't clean install)

Can someone please help me?

You need someone to come out and check, with multiple units all having the same problem it's an outside issue.

Try power cycling the router, pull the power jack, leave for 10s then power up again. Occasionally routers will develop a glitch that causes this
If the router was supplied by your ISP you could try contacting them for support

The adapter has packed in. Buy a new one.

You need to FORGET the old saved connection, so that when it lists Wi-Fi you can connect to, ie your own, you try and connect IT MUST ASK YOU FOR THE PASSKEY so that it recreates your security credentials THAT HAVE CHANGED.

I would 1st try Forgetting the networks and reconnecting. Or the same thing is accomplished by renaming your Wi-Fi network name (SSID) on the router. This forces the computer to reset it's configuration for that network.
That failing you can try a factory reset on your router and set the network up all over again. In case the router is the one rejecting the computers mac addresses.