|Its is possible.|
ILLUSTRATION ON IT ACHIEVEMENT
Get a wireless Router of your choice( preferably Gigabyte type), connect the WAN cable you have been connecting to your PC LAN port to WAN/INTERNET port on the wireless router then power up the router( UPS power is preferred), then check your PC LAN if it is on DHCP or Static. If it is on DHCP you set your router WAN to DHCP but if it is on Static then you copy out all IP addresses seen then configure in your wireless Router.
Then you connect you PC to an Ethernet port of the Router through an Ethernet cable then log in to the router by typing the router IP address to the URL of your PC browser, then username and password windows pop up then supply them and press enter key on your keyboard, then you click on wireless option and enable wireless, rename SSID to your desired one( NOTE: This is what you will see when search Wi-Fi) and click on wireless security then put your desired password(preferable mixed with different characters, upper case,lower case mixed with numeric and signs).
Type of network should be MIXED so that all wireless devices can connect. After all you disconnect Ethernet cable connected