Hello, I am helping (trying to help) a friend with their laptop. It originally came with Windows 8 on it, and someone attempted to install Windows 7 on it. They and I don't know exactly what happened but now the system won't boot past the Windows 7 glowing logo, no safe mode either. There appears to be 5 partitions on hdd. 2 systems/2 recovery/ and one where "OS" is installed. I've used MagicJellyBean Keyfinder to get a product key, and it states that it is Windows 7 and gives Key, same results from ProductKeyfinder from another program. If I attempt to install Windows 8 from an OEM disc that I have with the COA be automatically inserted from the UEFI/BIOS???