Kernel Panic Problem in Snow Leopard. Why I can't upgrade to Lion?

Hello

At first I had a problem booting, the computer can't boot, then after I opened and clean the logic board and all inside with dielectric liquid, finally boot, into the snow leopard installer and install it, all works fine, but when I try to upgrade or install from cero to another OS like Lion or Mountain Lion have a kernel panic, sometimes in the apple logo screen and sometimes in the installer.

So, after this I decide to use Snow Leopard, but sometimes I have this kernel panic:

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Interval Since Last Panic Report: 81889 sec

Panics Since Last Report: 4

Anonymous UUID: B39824D8-738B-4681-9278-C4A654E32C09

Fri Nov 8 00:32:20 2013

Machine-check capabilities (cpu 1) 0x0000000000000806:

family: 6 model: 23 stepping: 6 microcode: 1548

Intel(R) Core(TM)2 Duo CPU E8335 @ 2.66GHz

6 error-reporting banks

threshold-based error status present

Machine-check status 0x0000000000000005:

restart IP valid

machine-check in progress

MCA error-reporting registers:

IA32_MC0_STATUS(0x401): 0x1000000000000000 invalid

IA32_MC1_STATUS(0x405): 0x0000000000000000 invalid

IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid

IA32_MC3_STATUS(0x40d): 0xb62000000102010a valid

MCA error code: 0x010a

Model specific error code: 0x0102

Other information: 0x00000000

Threshold-based status: Green

Status bits:

Processor context corrupt

ADDR register valid

Error enabled

Uncorrected error

IA32_MC3_ADDR(0x40e): 0x0000000057e5b3c0

IA32_MC4_STATUS(0x411): 0x0000000000000011 invalid

IA32_MC5_STATUS(0x415): 0xb200001802000e0f valid

MCA error code: 0x0e0f

Model specific error code: 0x0200

Other information: 0x00000018

Threshold-based status: No tracking

Status bits:

Processor context corrupt

Error enabled

Uncorrected error

panic(cpu 1 caller 0x2aaf41): Machine Check at 0xffff08a5, thread:0x6865b7c, trapno:0x12, err:0x0,registers:

CR0: 0x80010033, CR2: 0x1525a000, CR3: 0x00100000, CR4: 0x00000660

EAX: 0xffff0893, EBX: 0x03dd0057, ECX: 0x00000000, EDX: 0xfffffd80

ESP: 0xb0cb6a20, EBP: 0xb0cb6a28, ESI: 0x224a8690, EDI: 0x20823480

EFL: 0x00000216, EIP: 0xffff08a5

Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)

0x30342fb8 : 0x21b837 (0x5dd7fc 0x30342fec 0x223ce1 0x0)

0x30343008 : 0x2aaf41 (0x59dfe4 0x59e0d1 0xffff08a5 0x6865b7c)

0x303430f8 : 0x2a29f2 (0x1 0x4088 0xc0bc0878 0x77fb)

BSD process name corresponding to current thread: Google Chrome He

Mac OS version:

10K549

Kernel version:

Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386

System model name: iMac8,1 (Mac-F226BEC8)

System uptime in nanoseconds: 7178433901093

unloaded kexts:

com.apple.driver.AirPortBrcm43xx 423.91.27 (addr 0xd82000, size 0x1900544) - last unloaded 163753279350

loaded kexts:

com.apple.filesystems.autofs 2.1.0 - last loaded 27741960963

com.apple.driver.AppleHWSensor 1.9.3d0

com.apple.driver.AppleHDA 2.0.5f14

com.apple.driver.AppleUpstreamUserClient 3.5.7

com.apple.driver.AppleMCCSControl 1.0.20

com.apple.kext.ATIFramebuffer 6.3.6

com.apple.ATIRadeonX2000 6.3.6

com.apple.driver.AppleBacklight 170.0.46

com.apple.driver.AppleLPC 1.5.1

com.apple.driver.AudioAUUC 1.57

com.apple.driver.ACPI_SMC_PlatformPlugin 4.7.0a1

com.apple.driver.AppleIntelPenrynProfile 17

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AudioIPCDriver 1.1.6

com.apple.driver.AppleIRController 303.8

com.apple.BootCache 31.1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.iokit.IOAHCIBlockStorage 1.6.4

com.apple.iokit.AppleYukon2 3.2.1b1

com.apple.driver.AirPortBrcm43224 428.42.4

com.apple.driver.AppleFWOHCI 4.7.3

com.apple.driver.AppleUSBHub 4.2.4

com.apple.driver.AppleAHCIPort 2.1.7

com.apple.driver.AppleIntelPIIXATA 2.5.1

com.apple.driver.AppleUSBEHCI 4.2.4

com.apple.driver.AppleUSBUHCI 4.2.0

com.apple.driver.AppleEFINVRAM 1.4.0

com.apple.driver.AppleRTC 1.3.1

com.apple.driver.AppleHPET 1.5

com.apple.driver.AppleACPIButtons 1.3.6

com.apple.driver.AppleSMBIOS 1.7

com.apple.driver.AppleACPIEC 1.3.6

com.apple.driver.AppleAPIC 1.4

com.apple.driver.AppleIntelCPUPowerManagementClient 142.6.0

com.apple.security.sandbox 1

com.apple.security.quarantine 0

com.apple.nke.applicationfirewall 2.1.14

com.apple.driver.AppleIntelCPUPowerManagement 142.6.0

com.apple.driver.DspFuncLib 2.0.5f14

com.apple.driver.AppleProfileReadCounterAction 17

com.apple.driver.AppleBacklightExpert 1.0.1

com.apple.iokit.IONDRVSupport 2.2.1

com.apple.kext.ATI2600Controller 6.3.6

com.apple.kext.ATISupport 6.3.6

com.apple.driver.AppleHDAController 2.0.5f14

com.apple.iokit.IOHDAFamily 2.0.5f14

com.apple.driver.AppleProfileTimestampAction 10

com.apple.driver.AppleProfileThreadInfoAction 14

com.apple.driver.AppleProfileRegisterStateAction 10

com.apple.driver.AppleProfileKEventAction 10

com.apple.driver.AppleProfileCallstackAction 20

com.apple.driver.IOPlatformPluginFamily 4.7.0a1

com.apple.iokit.IOFireWireIP 2.0.3

com.apple.iokit.IOSurface 74.2

com.apple.iokit.IOGraphicsFamily 2.2.1

com.apple.iokit.IOBluetoothSerialManager 2.4.5f3

com.apple.iokit.IOSerialFamily 10.0.3

com.apple.driver.AppleSMC 3.1.0d5

com.apple.iokit.IOAudioFamily 1.8.3fc2

com.apple.kext.OSvKernDSPLib 1.3

com.apple.iokit.AppleProfileFamily 41

com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.8

com.apple.driver.BroadcomUSBBluetoothHCIController 2.4.5f3

com.apple.driver.AppleUSBBluetoothHCIController 2.4.5f3

com.apple.iokit.IOBluetoothFamily 2.4.5f3

com.apple.driver.AppleUSBHIDKeyboard 141.5

com.apple.driver.AppleHIDKeyboard 141.5

com.apple.iokit.IOUSBHIDDriver 4.2.0

com.apple.driver.AppleUSBMergeNub 4.2.4

com.apple.driver.AppleUSBComposite 3.9.0

com.apple.driver.XsanFilter 402.1

com.apple.iokit.IO80211Family 320.1

com.apple.iokit.IONetworkingFamily 1.10

com.apple.iokit.IOFireWireFamily 4.2.6

com.apple.iokit.IOUSBUserClient 4.2.4

com.apple.iokit.IOAHCIFamily 2.0.6

com.apple.iokit.IOATAFamily 2.5.1

com.apple.iokit.IOUSBFamily 4.2.4

com.apple.driver.AppleEFIRuntime 1.4.0

com.apple.iokit.IOHIDFamily 1.6.6

com.apple.iokit.IOSMBusFamily 1.1

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 6

com.apple.driver.DiskImages 289.1

com.apple.iokit.IOStorageFamily 1.6.3

com.apple.driver.AppleACPIPlatform 1.3.6

com.apple.iokit.IOPCIFamily 2.6.5

com.apple.iokit.IOACPIFamily 1.3.0

Model: iMac8,1, BootROM IM81.00C1.B00, 2 processors, Intel Core 2 Duo, 2.66 GHz, 2 GB, SMC 1.29f1

Graphics: ATI Radeon HD 2600 Pro, ATI Radeon HD 2600 Pro, PCIe, 256 MB

Memory Module: global_name

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8C), Broadcom BCM43xx 1.0 (5.10.131.42.4)

Bluetooth: Version 2.4.5f3, 2 service, 12 devices, 1 incoming serial ports

Network Service: AirPort, AirPort, en1

Serial ATA Device: WDC WD5000AAKS-40YGA1, 465.76 GB

USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8502, 0xfd400000 / 3

USB Device: Keyboard Hub, 0x05ac (Apple Inc.), 0x1005, 0xfd100000 / 2

USB Device: wireless device, 0x1d57, 0x0001, 0xfd130000 / 5

USB Device: Apple Keyboard, 0x05ac (Apple Inc.), 0x021d, 0xfd120000 / 4

USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x5d100000 / 2

USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x1a100000 / 2

USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x820f, 0x1a110000 / 3

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I already have use the Apple Hardware Test a lot of times and never detect a problem.

I believe is a heating problem so I put a new silver paste in the CPU and in the GPU, and put all the fan works at high speed with "smcfancontrol" and this give me more chance to use the computer but still sometimes have the same kernel panic.

So i hope someone can help me and explain me the kernel problem message. Thank you for the help : )