Hello. I recently decided to format my vista 64 bit machine and install windows 7 64 bit. I currently have an HP notebook (Pavilion 9930us) my basic specs are: intel duo core 2.0 ghz processor 4 gig DDR2 SDRAM Nvidia Geforce 8600M GS 300 gig HD I downloaded and burned Win 7 64 bit onto a DVD and attempted to install from there. The CD will boot and load into the initial screen where it displays "Install Now". When I click on it an error pops up saying "Windows could not retrieve information about the disks on this computer" So I thought it was a problem with the disk and I reburned another copy and tried to install...same problem. My friend has a 32 bit disk so I used that to then format my computer so then I could attempt a fresh install of 64 bit...same problem again. So now I installed 32 bit for the time being until I can figure out what the problem is... My other friend had the same issue as me and had to go with 32 bit. I know my computer can handle 64 bit due to me running 64 bit vista for a little over a year. I've been searching all over for an answer and have not come to much results. I hope someone here can help me. Thank you I really appreciate it.