There is a ton to digest and so many unknowns. I would assume the network every device is connected to is compromised. Get every device offline including the light bulbs. I would then create a new “clean” network where reformatted devices can be placed back onto one at a time. I would also strongly recommend keeping IoT devices on their own separate network.

8 GB of RAM doesn’t cut it these days. You’re looking at wanting 16 GB as a minimum for a general use computer or 32 GB for a gaming computer. I suggest looking up your model of laptop online to see if you’re able to upgrade your RAM. Some computers’ RAM is soldered and nonupgradable.

My mom fell for this scam along with paying them $500.00…. Doing a complete reformat of the computer is the only correct answer.