So, i just upgraded my motherboard and reinstalled windows. However, once it booted up, my hard drive says its already used over 600 gigs RIGHT after the windows 7 reinstallation. I used TreeSize and it says that there is only 14 gigs of stuff on my pc. What did I do wrong. Did i not allocate space to my computer? How do i fix this? Please help and thank you in advance. 
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