Just a general warning, do not click on any picture on the side of the Facebook page that you do not expect. There was a picture of Graham Norton indicating that he had died unexpectedly. DO NOT CLICK ON THE PIC. It's a scam. It tells you that this is Microsoft, your credit card details have been compromised and sent to ... At that point I crashed the computer. On attempted reboot it came up saying that the BIOS battery was flat, and refused to do anything. So I rebooted again, and went into the BIOS, and the BIOS info seemed OK, so I just cancelled, and rebooted as normal, then ran Malwarebytes and Kaspersky with no issues, so it seems it is just a SCAM. Apparently they want you to input your card details, but I didn't go that far.