OK I need windows 7 back. 10 doesnt have a sound card driver compatible with this HP model. Was told I had to pay and/or buy windows 7 again to reinstall. I lost sound after system recovery and automatic upgrade to windows 10. Im a disabled grandma and cant afford all this. It had windows 7 on it prior so Im confused as to why I have to pay to get it back. Can anyone help me with this please? Im not computer saavy I need it for a game and I watch tv on it so sound is important. Thanks in advance!