Mac Pro 1,1 won't start/boot up

Question

Hi all,
I have a big problem with my Mac Pro 1,1 (2,66 Core, 6GB Ram) - it does not start up.
I tried to boot in safe mode, but boot process stopped (spinning circle freezes). Then I tried to boot in single user mode and checked the Harddrive with fsck... The Drive was modified and seems to be okay. But the mac won't start. I tried to boot from the original Snow Leopard DVD and i got an Kernel Panic. Then I tried to get access to myy Harddrive via Target Disk mode but the Harddrivw wasn't accessable for my Powerbook G4 which I used has the Host Computer.
I've resettet the PMU and the Ram - nothing helped.
When I start in Verbose Boot, the Mac shows the following Info:
MAC Framework succsessfully initialized
using 5242 buffer headers and 4096 cluster IO buffer headers
IOAPIC: Version 0x20 Vectors 64:87
ACPI: System State (S0 S3 S4 S5) (S3)
AppleIntelCPUPowerManagement: initialization complete
Sleep failure code 0x00000000 0x12000000
mbinit: done (64 MB memory set for mbuf pool)
rooting via boot-uuid from /chosen: 5106C8FE-933B-3FCF-B172-5979......
com.apple.AppleFSCompressionTypeZlib kmod start
2.2.05 Little Snitch: start
com.apple.AppleFSCompressionTypeZlib load succeeded
AppleIntelCPUPowerManagementClient: ready
Waitung on <dict ID="0"><key>IOProviderClass</key<>string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
Got boot device = IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleAHCI/PRT0 @0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDri ver/WDC WD2500JS-41SGB0 Media/IOGUIDPartitionScheme(Main@2
BSD root: disk0s2, major 14, minor 2
jnl: unkown-dev: replay_journal: from: 15926272 to: 18200064 (joffset 0x747000)
FireWire (OHCI) TI ID 8025 built-in now active, GUID 0016cbfffe6e5bf0; max speed s800.
jnl: unknown-dev: journal replay done.
com.apple.launchd 1 com. apple.launchd 1 *launchd(1) has started up.*
com.apple.launchd 1 com. apple.launchd 1 *verbose boot, will log to /dev/console.*
Bug: launchctl.c:3557 (23930):17: ioctl(s6, SIOCAIFADDR_IN6, &ifra6) != -1
Running fsck on the boot volume...
Executing fsck_hfs (version diskdev_cmds-491.2-2').
fsck_hfs: Volume is journaled. No checking performed.
fsck_hfs: Use the -f option to force checking.
hfs: Removed 4 orphaned / unlinked files and directories
launchctl: Please convert the following to launchd: /etc/mach:init.d/dashboardadvisoryd.plist
systemShutdown false
Waiting for DSMOS...
AppleIntel8254XEthernet: Ethernet address 00:17:f2:02:67:fe
AppleIntel8254XEthernet: Ethernet address 00:17:f2:02:67:ff
Previous Shutdown Cause: 0
NVDANV50HAL loaded and registered.
DSMOS has arrived.
Can anybody help me? Any Ideas?
Thank you !!!

Answer 1

Yes, that is what I wanted to know, and tells me it isn't with the hard drive or OS itself.
Not to fear, even English doesn't quite cut it at times.
I assume also you tried with ONLY minimum necessary:
mouse, keyboard and power to computer along with monitor.
If you have your OEM DVD that came with Mac Pro originally, that will not ever boot with original OS, your 8800GT requires 10.5.2 or later OS DVDs.
Your OEM DVD though does have Apple Hardware Test.
Hold 'D' on startup
See if that passes Extended Test.
And if you already did so, no need to do so again, repeated resetting SMC isn't a good idea. But unplug power and hit ON for 8 seconds (nothing happens) and then reconnect power and mouse/kb.
Make sure the 8800GT power is connected and card is (still) firmly seated.
Do a general check of everything, including Risers with RAM.