I have a western digital 160 gig hard drive that i bought a year ago and it only recognizes 130 gigs. I dont know y i waited this long but now i only have 20 gigs left and i want to get my 30 more that i paid for. When i check under bios it recognizes that it is a 160 gig hard drive but not when im in windows. How can i fix this problem? Thank you in advance for your information.