I installed a new hard drive that is not recognized by Compac Pressario sr555of. The Compac screen opens and I can press f10 that tells me that there is no drive in 1, 2,3,4. The disk drive works, I can load the 1rst of the 3 recovery Vista disks, but not the other 2. The first disk boots up nicely but takes me to the recovery window instead of asking me for disk2. Disk 1 displays the loading bar at the bottom of the screen and acts normally, the drive works somewhat. Does anyone know what to do. I checked and rechecked the connections more than ones.