I have a friend with a mac pro 2008 model - which is failing to boot. Windows 7 was the predominantly used OS on it, and she hardly ever booted into OSX Snow Leopard. She did change the graphics card at one point, but I dont think she booted into osx once after installing the replacement gfx card (xfx 6870).
She tried to boot into OSX by holding the option key - but just received a blank screen and no video output. When booting into windows, and selecting the 'boot into osx on reboot' option - now there is no video output at all - and no option to select boot OS - so we're really stuck now. There are two chimes on boot.
I really have no experience with Macs - and have no idea where to start troubleshooting this problem. Any help would be appreciated!
Edit: I have done some reading and possibly the reason there is no video is because the xfx 6870 model has not been flashed, and doesnt support the efi-bootcamp menu.
Edit: Are there any keyboard shortcuts to select the OS on the bootcamp os select menu?
Edit: Finally got windows 7 booting again after digging out the broken 8800GT. Now just need an idiot-proof guide on flashing the 6870 so it works in osx!
Edit: After doing some reading - it appears that the last version of snow leopard should have support for the 6870 - so I will probably try booting to OSX with the old card, then running the system update - and hope that the old gfx card does not fail completely during this time. Then - if we can boot into OSX with the 6870, we will try using this zeus tool http://www.groths.org/?tag=zeus - which appears the easiest way to flash the card.