So I'm quite new to the PC game, but I've got quite a good rig. Recently, though, my SSD has been booting slow, so I checked disk usage and it's using about 40-50% of the disks read/write capacity when the highest usage of any program is ~50MB/s. At boot the drive sits at around 99% usage which makes opening programs sluggish and irritating. I think I know what caused it, which is using too much of the SSD (I got to around 10GB spare at one point before I knew what was wrong). Is there any way to fix the issue without either buying a new drive or doing a fresh install of windows?