I've had a pre-built Asus PC since 2016. I put in a Gtx 1050ti SSC, 600 watt Evga PSU, 2x8 3200mhz Corsair Vengeance, and a Samsung 860 EVO. A while back a power outage burnt out my motherboard, so I dumbly had it replaced with the same factory mobo. I've been playing games on this PC since day 1, it wasn't until 2 years ago that I noticed my boot time taking around 15 minutes and trying to open an application within the first 8 minutes will take 20 minutes on its own. My disk C drive is at 100 % for 40 minutes upon turning on my computer. Random items that I have no idea what they are take up all the disk usage while my EVO has never gone above 50 %. I tried to put more stuff on my EVO , but it doesn't allow me saying that I don't have the authorization. I've looked up hundreds of videos on how to clean my Disk C drive and how to make it faster, but nothing has worked at all. I've had the idea of wiping my hard drive clean in hopes to boost my PC to its original form (decent speed, not fast, but not 20 minute boot up) and re-download my games later, but I feel it wont won't work. I have also had the idea to buy a newer and better mobo (instead of a factory mobo from a Asus), as well as a new hard drive and reinstalling Windows because I already have upgraded components other than these two. But I am not sure of how to go about that or what the cost should be.