Root kits are pretty notorious at seating themselves in so deep they are near impossible to root out even with good AV software. Even more nefarious are UEFI burns into your system ROM. Be sure to wipe all your keys in the UEFI BIOS before you reinstall. Any viruses written to the ROM will carry over to a newly formatted drive. So this is crucial step. Any lost drivers will be reinstalled with the OS.
For future reference, never run cracked software. And if you are surfing the web, use a non-privileged account. Like 90% of window exploits can't run from a non-admin account. NEVER get software from a place like cnet download or major geeks. Always try to seek out its source on the publishers website or git-hub like repositories (That allow certification through code inspection)
You can also view the processes to see what's sucking up all your time from task manager (If the code doesn't obfusciate itself through a root-kit.) Using task manager->[processes] tab ->[resource manager] button, you can view which processes are taking up system resources like drive and network. 10:1 you're probably infected with a miner of some sort if it hasn't tried to blackmail you yet. But be careful, some viruses can be used to use your PC as a backdoor for D.O.S. and attack vectors against other machines, as well as VPN gateways to hide illegal activity. That's a good way to get someone knocking on your door.
BleepingComputer.com is a good resource for tracking down sources of these kinds of issues. There are various security professionals on there from various Anti-virus companies who sit there and analyze people's machines to see what's going on. This is a win-win. Not only does it help you, but helps them develop signatures for their Anti-virus products that people pay for cough cough
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