I get a black screen after installing the bootcamp drivers on my newly created windows partition?

Question

I am attempting to install windows 7 on my mid 2007 core 2 extreme iMac. I open bootcamp and do all of the steps except the usb flash drive drivers from apple because the server always fails to load. After restarting, I install windows 7 to the bootcamp partition, and the screen goes black during the "Completing Installation." I wait about an hour before shutting down and rebooting into my Mac partition. I use paragon ntfs for mac and go to the drivers folder and delete the atikmdag.sys file and restart. Booting into the windows partition, I get the error that says "Windows installation has failed because the system unexpectedly restarted. Click ok to restart and redo installation" or something along those lines. Instead of pressing ok, I press shift+f10 and open regedit. After opening regedit, I go into some registry file for the setup (I don't remember where this is located, although I can find it if needed), and I change a value from 3 to 1. After doing this and restarting, It boots regularly with a super low res screen but it boots without problem. I go to the apple website and download the appropriate bootcamp support software and install on my windows partition. After restarting, the screen is black again. I assume this is another video driver problem again because the black screen seems to always be video driver problems; however, its odd that the bootcamp support software would give me an incorrect video driver as it is directly from apple. Would this be the problem or does anyone know a fix? Any help is appreciated.
Cheers,
Adam

Answer 1

If you bought your RAM at a place that also sells PC RAM you may have gotten mislabelled RAM. PCs can handle different RAM speeds so they’ll often label higher speed RAM as a lower speed rather than make two different speeds of RAM. But Macs are much more picky. They require a RAM stick to be exactly 667mhz not 675mhz or 800mhz. The way to tell is to put one of your old RAM sticks in and it will force the new RAM to run at the correct speed.
This is from one review of PNY RAM:
"These modules are actually 800Mhz. PNY no longer makes or sells 667Mhz modules. Not all computers that require 667Mhz are compatible with 2 800Mhz modules. They refuse to down clock properly. This is especially true with a number of Core 2 Duo MacBooks. Spoke to PNY support, they flat out told me that yes, they sell 800Mhz modules in 667Mhz packaging. If you RMA a module that is 667Mhz (or supposed to be 667Mhz) they will replace it with an 800Mhz module as they no longer have any 667Mhz SODIMMs, not even for RMA replacement!"
These are good online stores for Mac compatible RAM
OWC http://eshop.macsales.com/shop/memory/MacBook/DDR2/ - They offer Mac tested RAM at very good prices.
Crucial Memory http://www.crucial.com/ - good place to buy RAM from all over the world. They also have an excellent memory selector that allows you to choose memory based on your computer's model
Data Memory Systems http://www.datamemorysystems.com/apple-memory.asp - another good, cheap place to buying RAM if you live in the U.S.