My Coby tablet will only turn on to the Coby logo and then freezes. Trust me I left it alone to do it's thing for a whole night and it didn't change. I have tryed every button combo I could, including Pressing and holding power and volume up or volume down, and nothing happens except it turns back off again. Actually, the first time I tried those specific key combinations, it did bring me to the bios settings or whatever they're called, and did a factory reset and then rebooted. After that I never got past the startup screen, and also I can't bring back the bios settings screen. I already tried pressing reset. Any Ideas?