I restarted my machine after vacation and it won't boot into windows. Hardware and bios are all good. I ran manufacturer tests. My backup win10 boot software from usb allows me to get to restore under advanced system restore but all options now requires a password and all drives are portioned GPT. My admin password isn't valid, or doesn't take, or has been changed by some virus! so now I can't restore or reload windows onto hard drive due to all 6 partitions, that windows created, are GPT. I have no room left on HDD to create another partition, even if I wanted too. What is going on? This seems more like an attack versus a software update from Microsoft..