I have a DEll Inspiron 620 and I have an apparently OLD virus on it, that didn't get picked up by newer scans.
It seems to be blocking programs like combofix, which is highly annoying.
My IT guy gave me a flash drive to try and I cannot get the computer to boot, I shut down and did F12 but it's not giving me any of the boot options that I keep seeing on various sites. There is nothing about booting from a USB flash in either the first popup box or the larger menu when I click on the first.
Clearly, I'm missing something.