I had recently installed Google Drive on my Macbook Pro running Snow Leopard 10.6.8 but it kept crashing my computer to the point where it would not start. I deleted Google Drive in Single User Mode using rm -rf /Applications/Google\ Drive.app I am still getting blue screen or the grey screen with the turning wheel, I suspect from all the forced restarts, but it is also a possibility I made an error. Sometimes the desktop will load but is completely unresponsive and freezes immediately. I have tried resetting the pram, smc, repaired the drive in disc utility and reinstalled Snow Leopard from the disc. Loading in Verbose mode sometimes loads the desktop, or sometimes blue screen. Once it got stuck on the text "internal modem support declares no kernal dependencies" Any help would be much appreciated! A clean install of osx is my last resort.