I got a malware attack a few days ago.

I did sfc/scannow

I used combofix on my own, not knowing I shouldv'e had assistance. I have the log for that.
I've also used malwarebytes(fixed 12 infections) and adaware.

It was fine for 2 days, then firefox crashed and wouldn't open. I removed firefox
and installed Orca. Now when I boot, I get the message " PC has experienced a ??? .... if this is the first time your seeing this message, reboot. otherwise, follow directions below....."

In safe mode I don't get the task bar; I get a "windows security" message. One button says "buy". I'd say its fake.