Last Friday I dropped my 13" late 2009 macbook pro from 2/3 ft onto wooden floor, it landed first on the side of the hard drive. It worked fine for a few hours, until it froze with the beachball and I had to force shutdown. Upon startup I had a flashing folder with a question mark inside, and I tried booting from the snow leopard disc but the drive could not be found in disk utility. Everything I researched pointed to the hard drive being dead, so today I went out and purchased a replacement hard drive and installed it. Upon startup I had the same flashing folder icon, but then booted while holding the C key with the snow leopard disc and the drive now shows up in disk utility, but when trying to create a partition or format the drive I get the error 'Disk Erase Failed. POSIX reports: The operation couldn't be completed. Cannot allocate memory' Is my old hard drive still likely to be dead or could this be a different problem? Thanks!