so a couple of days ago i was typing on my phone, which i have only owned for about a year, started to lag. this happens often so waited it out. after about 10 seconds, my phone shut off and now it wont.turn on unless you take the battery out and put it back in. and even then it wont go past the LG screen. Charging it does nothing and the factory reset screen doesnt even come up. the gu at veriosen said he had no idea what was wrong with it. any suggestions?