hi i just bought asus fx505dt and whenever i try to start the laptop it wont show anything on display but the keyboard lights and power lights are on but as soon as i restart it after forcefully shutting it down it starts working fine.............................but same issue happens the next time.................i also noticed it only happens if i am not using the laptop for an hour or two and try to start after some time.......is this some minor issue or should i return the laptop