Problemas arranque imac g5(S.O.S.)

[Mac@ries]

...se me olvidó decir que leyendo los errores graves del sistema en el log me aprece esto:

Backtrace:
0x3139C5A4 0x3139CFA0 0x313C5608 0x0003C734 0x000A9654
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.AppleAirPort2(3.5)@0x31380000
dependency: com.apple.iokit.IONetworkingFamily(1.5.0)@0x2fe9a000
dependency: com.apple.iokit.IOPCIFamily(1.6)@0x27fd0000
Exception state (sv=0x43B4F280)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

Y ESTE OTRO:

Kernel version:
Darwin Kernel Version 8.0.0: Sat Mar 26 14:15:22 PST 2005; root:xnu-792.obj~1/RELEASE_PPC
panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x00095564 0x00095A7C 0x00026838 0x000A8184 0x000AB880
Proceeding back via exception chain:
Exception state (sv=0x48DC5A00)
PC=0x002D4D44; MSR=0x0000B030; DAR=0x00000221; DSISR=0x40000000; LR=0x002D6410; R1=0x17F2B950; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x03219700 0x002D6410 0x30C19740 0x30C193C8 0x30C16AB8 0x30C16CF0
0x30BFABE8 0x002E5B98 0x002E7A64 0x0008C424 0x000291BC 0x000233A8 0x000ABBAC 0x00700070
backtrace terminated - frame not mapped or invalid: 0xBFFFE9D0

Kernel loadable modules in backtrace (with dependencies):
com.apple.GeForce(4.0.0)@0x30bf3000
dependency: com.apple.iokit.IOPCIFamily(1.6)@0x27fd1000
dependency: com.apple.iokit.IOGraphicsFamily(1.4)@0x3719f000
dependency: com.apple.iokit.IONDRVSupport(1.4)@0x371c3000
dependency: com.apple

estos son los que mas se repiten..Orienta a algo sobre el airport o la tarjeta gráfica?...perdón por el rollo:capon: