I just had to refresh my Windows 8 machine. When I re-installed Google Drive, it turned out I couldn't simply point it to the existing Google Drive folder. I think my only two options are: 1) redownload 5GB worth of data even though I already have all of it on my PC, or 2) trick it by pointing it to another folder, then moving the files there and hoping that works. Will update if it works.
Surprise HN: Google Drive can't re-sync your files | Heykuki News