How to check a laptop for spyware?

Question

laptops

There is a laptop used for work, which will be present at negotiations, etc. etc.
Windows 8.1 (licensed), McAfee. Who put - is not known.
You need to make sure it doesn't have spyware on it.
Is it even possible to check this 100% without formatting the hard drive and manually installing Windows and programs?

Answer 1

If there is unlimited time and an unlimited number of qualified personnel for such a check It is
easier to format and reinstall from a trusted source from 0
with UEFI
But even in this case there are no guarantees

Answer 2

Possible: checking existing programs, processes, drivers and other services, all programs that you run, sniffing (intercepting incoming and outgoing packets)

Answer 3

The easiest way is to take it down and install it yourself in a new way. This level of precaution is just right for your needs. More vigil is already too much.

Answer 4

Here is a solution https://covert.ru/products/
Personally did not use it.