If you dont trust it, just dont use it. NEVER use any exe you didnt compile

Better yet:
- review the source code line by line, if anything seems suspicious or don't understand it, it's likely a threat on so many levels;
- review the compiler, check all SHA signatures for all downloaded and installed packages (use https to get sigs from authors, verify certificates, compare against results on another computer which you never touched)
- dump Windows. You may have viruses already which you never knew about, or ever will.
- clear CMOS / flash UEFI or BIOS and make sure secure boot is on and  that you never signed insecure kernel modules to load at boot time

Lastly:
- make sure you protect against RF attacks (keystrokes and such can travel a long way in the EM field). Use a mechanical keyboard and a CRT monitor (not a digital display, pixels can be trapped with a correctly tuned analog-to-digital converter and some decoding software)
- for maximal anti-virus protection you need to also disconnect from the internet, run all software on VMs.

Compile everything from scratch.