Ok you installed a software to change the settings on your Wireless. This was not compatible and when you uninstalled it the Wireless went away too?
On the front left side or in between your keyboard and the screen (depending on the model) you will find your Wireless switch ...
Make sure it will go to blue. If it goes your WiFi is detected. You can always configure it to connect to the net, assuming your connection is broadband, without any software.
You can always look in "device manger" too see the status of it.
If it doesn't, go to Start, and type "recovery" in start search, go to the recovery manger and click on "application a driver recovery", "Driver recovery", and reinstall your wireless Network card driver. Depending on the model again, it will most likely be called "BroadCom ... wireless", if you don't see BroadCom, look for "Intel ... Wireless" and reinstall it.
The software you installed needs to be uninstalled. But this will make you see if your WiFi NIC is present or detected.
You can always recover your nb and bring it back to factory settings to make sure everything is in the right place, using the recovery manager, but this will delete all the info in your nb.