Dell Inspiron 15 3000 series Windows 10
I had a warning telling me that it was from Microsoft telling me that I had a virus and that I should call a toll free number starting with 877 and I was unable to navigate and click and had to do a hard shutdown. When I restarted the computer I was able to click off of the emergency page and clicked completely out of the computer. I checked my settings and found that Bluetooth was turned on. I never turn Bluetooth on but I have had company that was visiting and they were using my guest account.
I ran Malwarebytes Premium and found no threats. I tried to do a custom scan and did not have that option on Malwarebytes or on windows defender.
I don't know what to do next, please advise.
Thanking you in advance for your reply, I am