Root LG Optimus M Plus Wifi Issue! HELP!!


SO i have a LG Optimus M Plus, & I dnt know why it doesnt connect to my home network. I can connect my laptop, even my bro can connect their phones to my home network fine. I have Clear by the way. I also have "factory reset", I have "forgot" my home network on my phone, turned it off & back on, unpluged my home network & turned it back on, I have switched the "disable" button to "enable" on my Clear box. I have tried gng to other wifi spots, though sometimes i cant connect either, but then sometimes i am connected though i cant get online :/ Oh & i have tried changing my home network passwors but, i dnt know i guess that didnt work either LOL If anyone out there knows any other solution, plz plz plzzz share with me. Im not an electronic genius so ill appreciate it if you can give me step by step instructions LOL WHAT AM I DOING WRONG?!!! O.O :p