I'm pretty sure my PC is riddled with viruses and malware. I tried running Windows Security Defender, and this window popped up. Security Defender said there weren't any threats, but I'm pretty sure that's bullshit. Someone said that this Window that popped up regarding KSLDrivers or whatever means that something is interfering with Security Defender and making it seem like there are no threats. They also suggested that I should reformat my PC. I've never formatted my PC before, so a few things I'm curious about.
Would I have to reinstall Windows?
I have two physical hard drives. One of these hard drives is partitioned into two hard drives, and Windows is installed on one of those partitions. Do I only have to format the hard drive that Windows is on?