But my system has crashed and I can't get to the desktop. I get the following error:

System Failure: cpu=0 code =00000004 (No saveareas)
Latest crash info for cpu 0:
Exception state (sv=0x00000000)
PC = 0x00088330; MSR =0x00003000; DAR=0x00000048; System Failure

Backtrace

backtrace terminated - unaligned frame address: 0x8E008001

Kernel version;
Darwin Kernel Version 7.9.0
Wed Mar 30 20:11:17 pST 2005; root:xnu/xnu-517.12.7.obj~1/RELEASE_PPC

What can I do?