Hallo everybody. Need help installing Windows on a Macbook Pro. This is what i have: - I have a Macbook Pro 15" late 2008 - it's running Yosemite 10.10.1 - my CD-Drive died couple a years ago, so I have replaced it with a SSD: this is my primary drive now; the old HDD is connected internally, too (use it for pictures or music storage). - as I bought the SSD, I've installed Windows 7 32 bit using Bootcamp 3 years ago, and it was working perfectly (using it mainly for games). - since a lot of games support nowadays 64 bit, I've decided to install it. - I have an .iso of 64 bit Windows 7 (according to Apple late 2008 MB Pro supports 64 bit Windows 7) - my Bootcamp is 5.1.2 - using 8Gb USB-Stick (which I've used 3 years ago for installing Windows) This is what I have tried: - initially, running Bootcamp, it removed my old Windows Partition, so I don't have Windows anymore. Then, it wanted to install Windows, but required a CD (which I am missing). - after some days googling I've found a way to change the Info.plist (adding my Model and Boot-Rom Version and removing the word Pre in <key>PreUSBBootSupportedModels</key> in Bootcamp Package, so Bootcamp has now the option to create a USB from .iso - so, I've created a USB-Stick with Bootcamp, downloaded all support data and started the process: the problem comes after restart: there is a permanent Apple Logo. After waiting even for the whole night, which did not help, I turn off the Macbook and turn on again: in that case the black screen comes up and it says: "Non system disk, press any key to reboot". Nothing happens till power off. The message comes every time, until I press alt/option during the start and choose Macintosh Drive from the list (which shows me only Macintosh and Recovery: no USB). - since nothing worked, I've decided to disconnect my old HDD from the laptop and only the USB with Windows is inserted in the USB-Port: nothing changed, it even got worse: after the reboot from Bootcamp the gray screen stays for like 10 minutes and then the frozen apple logo appears. Restarting the Laptop changes nothing. So, does anyone have any idea, what I should try? I've tried 2 different Windows 7 64 bits. Should I borrow an external CD-Drive, burn Windows on DVD and try that? Or is there a problem with 64 bit? Or something else? Really appreciate the effort.