IMac G4 800MHz - Kernel Panics and Blank Screen At Startup

Two days ago, I was listening to iTunes, just browsing the internet, and suddenly I got a kernel panic. Yesterday, the exact same thing happened. After that, I got frustrated and just left it alone until today. When I attempted to turn on my iMac G4 800 MHz today, the screen does not turn on and the mouse does not even receive power. The only thing that appears to receive power is the power LED on the display.
I experimented with it for a few minutes and found that if I unplug the power cord for a few minutes, plug it back in, and turn the computer back on, the screen will turn on. However, as soon as I log in, I get another kernel panic, and it goes back to the screen not turning on.
Any suggestions?

::UPDATE::
Okay, I eventually got my iMac to start up successfully, without crashing after logging in. But I still thought there was something wrong so I booted from the Apple Hardware Test CD that came with my computer and I got yet ANOTHER Kernel Panic! Here is what it said:
Kernel Panic Message:
DEFAULT CATCH!, code=300 at %SRR0: 000352d4 %SRR1: 00003030
Apple PowerMac4,2 4.3.5f1 BootROM built on 03/16/02 at 21:45:18
Copyright 1994-2002 Apple Computer, Inc.
All Ri
DEFAULT CATCH!, code=300 at %SRR0: ff84750c %SSR1: 0000b030
ok
0>
DEFAULT CATCH!, code=300 at SSR0: ff84750c %SSR1:_
This message appeared soon after it began testing the memory. The result of the test were as follows:
Test Results:
Airport Passed
Logic Board Passed
Mass Storage Passed
Memory In Progress
Modem Device Found
Video RAM Has not been run yet
And now it is back to not booting up at all!
Does anyone have any suggestions based on the new kernel panic message?
Thank you for your help.
Message was edited by: rrm74001

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    Apple PowerMac4,2 4.3.5f1 BootROM built on 03/16/02 at 21:45:18
    Copyright 1994-2002 Apple Computer, Inc.
    All Ri
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    Message was edited by: rrm74001

  • Kernel Panic and Black Screen

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    Wed May 23 20:58:09 2012
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    0xe5be58 : 0x511538 (0x5b58c50 0x0 0x511400 0xe5be98)
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    com.apple.driver.AudioAUUC     1.59
    com.apple.filesystems.autofs     3.0
    com.apple.driver.AppleHDA     2.1.7f9
    com.apple.driver.AppleUpstreamUserClient     3.5.9
    com.apple.driver.AppleMCCSControl     1.0.26
    com.apple.GeForce7xxx     7.0.0
    com.apple.driver.AppleBacklight     170.1.9
    com.apple.driver.ACPI_SMC_PlatformPlugin     4.7.5d4
    com.apple.driver.AppleLPC     1.5.3
    com.apple.iokit.IOUserEthernet     1.0.0d1
    com.apple.Dont_Steal_Mac_OS_X     7.0.0
    com.apple.driver.AudioIPCDriver     1.2.2
    com.apple.driver.AppleIRController     312
    com.apple.iokit.SCSITaskUserClient     3.0.3
    com.apple.AppleFSCompression.AppleFSCompressionTypeDataless     1.0.0d1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib     1.0.0d1
    com.apple.BootCache     33
    com.apple.iokit.IOAHCIBlockStorage     2.0.1
    com.apple.driver.AirPortBrcm43224     500.36.11
    com.apple.driver.AppleUSBHub     4.5.0
    com.apple.driver.AppleAHCIPort     2.2.0
    com.apple.driver.AppleIntelPIIXATA     2.5.1
    com.apple.driver.AppleFWOHCI     4.8.9
    com.apple.iokit.AppleYukon2     3.2.2b1
    com.apple.driver.AppleUSBEHCI     4.5.8
    com.apple.driver.AppleUSBUHCI     4.4.5
    com.apple.driver.AppleEFINVRAM     1.5.0
    com.apple.driver.AppleRTC     1.4
    com.apple.driver.AppleHPET     1.6
    com.apple.driver.AppleACPIButtons     1.4
    com.apple.driver.AppleSMBIOS     1.7
    com.apple.driver.AppleACPIEC     1.4
    com.apple.driver.AppleAPIC     1.5
    com.apple.driver.AppleIntelCPUPowerManagementClient     167.3.0
    com.apple.nke.applicationfirewall     3.2.30
    com.apple.security.quarantine     1.1
    com.apple.driver.AppleIntelCPUPowerManagement     167.3.0
    com.apple.driver.AppleAVBAudio     1.0.0d11
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    com.apple.iokit.IOFireWireIP     2.2.4
    com.apple.driver.AppleBacklightExpert     1.0.3
    com.apple.driver.AppleHDAController     2.1.7f9
    com.apple.iokit.IOHDAFamily     2.1.7f9
    com.apple.driver.IOPlatformPluginFamily     4.7.5d4
    com.apple.nvidia.nv40hal.G7xxx     7.0.0
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    com.apple.iokit.IOSurface     80.0
    com.apple.iokit.IOBluetoothSerialManager     4.0.3f12
    com.apple.iokit.IOSerialFamily     10.0.5
    com.apple.iokit.IOAVBFamily     1.0.0d22
    com.apple.iokit.IOEthernetAVBController     1.0.0d5
    com.apple.driver.AppleSMC     3.1.1d8
    com.apple.iokit.IOAudioFamily     1.8.6fc6
    com.apple.kext.OSvKernDSPLib     1.3
    com.apple.driver.ApplePolicyControl     3.0.16
    com.apple.driver.AppleGraphicsControl     3.0.16
    com.apple.iokit.IONDRVSupport     2.3.2
    com.apple.iokit.IOGraphicsFamily     2.3.2
    com.apple.driver.CSRUSBBluetoothHCIController     4.0.3f12
    com.apple.driver.AppleUSBBluetoothHCIController     4.0.3f12
    com.apple.iokit.IOBluetoothFamily     4.0.3f12
    com.apple.driver.AppleUSBHIDKeyboard     152.3
    com.apple.driver.AppleHIDKeyboard     152.3
    com.apple.iokit.IOUSBHIDDriver     4.4.5
    com.apple.driver.AppleUSBMergeNub     4.5.3
    com.apple.driver.AppleUSBComposite     4.5.8
    com.apple.iokit.IOSCSIMultimediaCommandsDevice     3.0.3
    com.apple.iokit.IOBDStorageFamily     1.6
    com.apple.iokit.IODVDStorageFamily     1.7
    com.apple.iokit.IOCDStorageFamily     1.7
    com.apple.driver.XsanFilter     403
    com.apple.iokit.IOATAPIProtocolTransport     3.0.0
    com.apple.iokit.IOSCSIArchitectureModelFamily     3.0.3
    com.apple.iokit.IO80211Family     412.2
    com.apple.iokit.IOUSBUserClient     4.5.8
    com.apple.iokit.IOAHCIFamily     2.0.7
    com.apple.iokit.IOATAFamily     2.5.1
    com.apple.iokit.IOFireWireFamily     4.4.5
    com.apple.iokit.IONetworkingFamily     2.0
    com.apple.iokit.IOUSBFamily     4.5.8
    com.apple.driver.AppleEFIRuntime     1.5.0
    com.apple.iokit.IOHIDFamily     1.7.1
    com.apple.iokit.IOSMBusFamily     1.1
    com.apple.security.sandbox     177.3
    com.apple.kext.AppleMatch     1.0.0d1
    com.apple.security.TMSafetyNet     7
    com.apple.driver.DiskImages     331.3
    com.apple.iokit.IOStorageFamily     1.7
    com.apple.driver.AppleKeyStore     28.18
    com.apple.driver.AppleACPIPlatform     1.4
    com.apple.iokit.IOPCIFamily     2.6.8
    com.apple.iokit.IOACPIFamily     1.4
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