I just built my first desktop and besides the awful time I had with cable management, thins went pretty good. I pressed the power button, it started, went to BIOS and continued to start installing Windows 7. However, when trying to install, it says I only have like 3950 Mb of space even though I have a 500 GB HDD. If my specs are needed they are: Intel I5 3570k, ASRock LGA z77 pro3, 8 ( 2 x 4GB ) corsair vengeance, 600 watt corsair, 500 GB Seagate 7200 rpm 16 mb HDD. Thanks in advance. It's so frustrating, I was hoping things would go smoothly. BTW I tried changing edi and ah-something ( sorry forgot what it's called) in BIOS. Is it possible I have a faulty HDD or motherboard. I read that you can check if your HDD works by feeling the vibration to know if it's on. If that's the case I think it is vibrating.