Earlier today after my wife had been gone for a little while she got back on her laptop to find it was double typing letters, she'd go to type r and it would respond with rt for example. While i was trying to fix that we ended up removing the battery on the bios screen due to it freezing up on us. Ever since then I have not been able to get it to turn back on. I've tried holding the power button for 30 seconds unplugged battery removed, windows plus b key and power key for 1 second, unplugging the cmos battery to no avail. Any ideas on what the problem could be? Its a HP pavilion g7 notebook with windows 8.