Wifi not connecting without Ethernet cable

I had this problem for two days, i fixed it by using the roll back driver for the wireless connection.

Thank you so much Berton, this info saved me a lot of hassle through some stressful weeks of college. Really appreciate it!!

Berton said:

If you can't connect with Wi-Fi plugging in an Ethernet cable is bypassing the wireless entirely. Have you checked Control Panel, Device Manager [or right-click the Start button and choose Device Manager], see if maybe you need to download then install drivers for your Wireless Network adapter? Check the Network work section, are there any yellow symbols there? Is the Wireless adapter listed? If so maybe it needs to have the drivers updated, right-click and make the choice while still connected. The downside to Upgrading to Win10 is the "it worked in Win7 w/SP1 or Win8.1" doesn't guarantee it works in Win10 without updating drivers that Microsoft may not yet have available, they usually come from the manufacturer of devices.