GA-P35-DS4, 10.5.5, Won't boot again after trying to sleep

[engintepe]

Hi,

 

I had installed 10.5.5 following the instructions and using the kexts given here. Everything was running fine until i tried putting the system to sleep. It went into sleep but now when try to turn the system on, I get garbled display everywhere including POST and BIOS. Garbled display means some characters are wrong in console based displays, HarK DisK instead of Hard Disk for instance. The colors of those wrong characters are funny as well.

 

Now OSX does not boot. The Apple Logo appears with magenta pixels spread all over the display but nothing else happens.

 

I tried booting with a live Ubuntu CD. The same display problems persist (funny text based display during POST and then random magenta pixels in XServer based screens) but Ubuntu is able to boot up. However XServer complains about not being able to find the DDC table.

 

I tried everything I could think of: Turn the system off, unplug the power cable, reset the CMOS, plug the graphics card out and the install it again, plugging the RAM modules out and installing them in different combinations. Nothing helped.

 

Here is my hardware:

Intel E8400 @ 3.0GHz

2x2GB DDR2 866Mhz RAM

GA-P35-DS4

NVidia 8600GT

 

 

Any ideas? Had anybody have similar problems?

[twobunnyrabbit]

Sounds like a hardware problem. Either the video card or the motherboard (? corrupt bios).

Have you tried putting in a different video card and see if the text/colours are still garbled?

Is it possible to post a screenshot? Also, have you tried booting OSX with the "-v" flag to see where it gets stuck?