After resetting the NVRAM (control, option, P, R) on my Macbook Pro 1,1 (2007) running 10.6.8 The screen is now split into 4 parts, each displaying the same thing. The screen immediately appears this way at the first grey screen, however if I do another NVRAM reset, upon restart after the second startup chime, the screen is normal but then after the cog stops spinning, the screen flickers, turns blue and splits into four again.
Another thing is when I tried using the Apple Hardware Test I couldn't read the instructions as the resolution was too small, but once I restarted and change my display resolution in System Preferences, the resolution was readable in AHT. I assumed the System Settings were loading when the OS had booted and that AHT runs without any of these settings (if that makes sense?)
I realize the MBP is quite old now but any help would be much appreciated
Thanks.
Another thing is when I tried using the Apple Hardware Test I couldn't read the instructions as the resolution was too small, but once I restarted and change my display resolution in System Preferences, the resolution was readable in AHT. I assumed the System Settings were loading when the OS had booted and that AHT runs without any of these settings (if that makes sense?)
I realize the MBP is quite old now but any help would be much appreciated
Thanks.