Mac Pro 1,1 dual-core intel xeon 2.66Ghz, NVIDIA GeForce 7300 GT OSX 10.5.8 hangs on boot, can boot in safe mode, disc permissions verified, disc verified. Please help me start it normally?

Question

Hi there, when I turn on my computer it just hangs on a grey screen with an apple logo.  I didn't install any new software on purpose lately.  It initially froze when I moved the mouse to get rid of the screensaver where it had been behaving normally.  When the screen saver went away the screen was messed up and everything was frozen and the date and time were huge and distorted.  I did a hard reset and I'm just stuck on that grey screen.  If I leave it for hours one of the screens turns blue and the other is black, but I can move the mouse.  A ghostly image of the cursor is stuck in the top left corner of the screen,
I can boot into safe mode and everything is normal.  I reset the PRAM.  I verified the discs and the permissions.  I don't seem to have any data loss.  When I restart normally I still get the grey screen.  The only weird thing in the console is 24/09/09 10:59:27 AM kernel unknown SIGSEGV code 0 .  I would really like my computer to work.  Thank you.

Answer 1

Have you run the check for non-Apple kernel extensions suggested above?
It's easy, you just cut-and-paste the command into terminal. If there is any output, you just cut-and paste it back in here.
Linc Davis suggests this as a way to find those non-Apple extensions:
Please copy or drag -- *don't type* -- the following command into a Terminal window, press Return, and post the output (if any):
kextstat -kl | awk ' !/apple/ { print $6 } '