Help! Macbook 2008. Unexpected shut off.

I have an older macbook (I think 2008) and cannot afford to get a new computer at the moment.
My macbook will shut off unexpectedly after only a few minutes of being off the charger.
I have bought a new battery.
Even if it is completely charged it will still do the same thing.
I have mac osx 10.6.8.
I tried to dl some new firmware but I don't know if I got the wrong one because it said it was incompatible.
I'm hoping maybe someone can guide me in the right direction.
Thanks in advance!
SC

Try to run Apple Hardware Test, if it'S hardware related problem.
http://support.apple.com/kb/HT1509?viewlocale=en_US
Macbook forum is following place There's a lot of people who well know about Macbook there:
https://discussions.apple.com/community/notebooks/macbook

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Hello, I am having some issues with my macbook pro 2012 edition. It is often shutting down/restarting unexpectedly. When it is on charger or when I had put it to sleep after attempting to power it up, its shut off and recovers where it was left off.
Error log:
Anonymous UUID:       920D6506-7E69-A210-84F6-1EE4D63348F9
Sat Aug 23 18:16:03 2014
panic(cpu 2 caller 0xffffff802bcdc24e): Kernel trap at 0xffffff7face59833, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x0000000000000008, CR3: 0x000000002e224000, CR4: 0x00000000001606e0
RAX: 0x0000000000000000, RBX: 0xffffff804c8cbd00, RCX: 0x0000000000000000, RDX: 0x0000000008000000
RSP: 0xffffff8219a4bd40, RBP: 0xffffff8219a4bd70, RSI: 0x0000000000000000, RDI: 0xffffff804c86d690
R8: 0x0000000000000001, R9: 0x0000000000000000, R10: 0xffffff8219a4bb90, R11: 0xffffff802c289ce8
R12: 0xffffff7face6e180, R13: 0xffffff804c8c6e88, R14: 0xffffff804c8c6e00, R15: 0x0000000000000000
RFL: 0x0000000000010286, RIP: 0xffffff7face59833, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000008, Error code: 0x0000000000000002, Fault CPU: 0x2
Backtrace (CPU 2), Frame : Return Address
0xffffff8219a4b9d0 : 0xffffff802bc22f79
0xffffff8219a4ba50 : 0xffffff802bcdc24e
0xffffff8219a4bc20 : 0xffffff802bcf3746
0xffffff8219a4bc40 : 0xffffff7face59833
0xffffff8219a4bd70 : 0xffffff7face59620
0xffffff8219a4bdd0 : 0xffffff7face61720
0xffffff8219a4be10 : 0xffffff7face34fca
0xffffff8219a4be40 : 0xffffff7fadacfe30
0xffffff8219a4be70 : 0xffffff7fadacf199
0xffffff8219a4bec0 : 0xffffff7fadacea17
0xffffff8219a4bf10 : 0xffffff7fadad1023
0xffffff8219a4bf30 : 0xffffff802c0af292
0xffffff8219a4bf80 : 0xffffff802c0af367
0xffffff8219a4bfb0 : 0xffffff802bcd7417
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         com.apple.iokit.IOAHCIFamily(2.6.5)[AB2D7D6A-B59B-3039-AE08-CBCC38208911]@0xfff fff7face31000->0xffffff7face46fff
         com.apple.driver.AppleAHCIPort(3.0.5)[7F56F309-28C2-342A-82C0-3908C164EBCC]@0xf fffff7fadac7000->0xffffff7fadae0fff
            dependency: com.apple.iokit.IOAHCIFamily(2.6.5)[AB2D7D6A-B59B-3039-AE08-CBCC38208911]@0xfff fff7face31000
            dependency: com.apple.iokit.IOPCIFamily(2.9)[4662B11D-2ECA-315D-875C-618C97CDAB2A]@0xffffff 7fac341000
         com.apple.iokit.IOAHCIBlockStorage(2.6)[8EC80DE5-078F-3949-9669-33A56446D86D]@0 xffffff7face57000->0xffffff7face6efff
            dependency: com.apple.iokit.IOAHCIFamily(2.6.5)[AB2D7D6A-B59B-3039-AE08-CBCC38208911]@0xfff fff7face31000
            dependency: com.apple.iokit.IOStorageFamily(1.9)[9B09B065-7F11-3241-B194-B72E5C23548B]@0xff ffff7fac26f000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
13E28
Kernel version:
Darwin Kernel Version 13.3.0: Tue Jun 3 21:27:35 PDT 2014; root:xnu-2422.110.17~1/RELEASE_X86_64
Kernel UUID: BBFADD17-672B-35A2-9B7F-E4B12213E4B8
Kernel slide:     0x000000002ba00000
Kernel text base: 0xffffff802bc00000
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System uptime in nanoseconds: 407256546841455
last loaded kext at 407070699054130: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7fadc7d000, size 49152)
last unloaded kext at 399251061953162: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7fadc7d000, size 32768)
loaded kexts:
com.vmware.kext.vmioplug.10.1.26 10.1.26
com.vmware.kext.vmx86 0143.58.62
com.vmware.kext.vmnet 0143.58.62
com.vmware.kext.vsockets 90.4.24
com.vmware.kext.vmci 90.4.19
com.symantec.kext.fw 5.3.1f9
com.symantec.kext.filesecurity 12.6.1f9
com.spotflux.Spotflux.tun 1.0
com.hzsystems.terminus.driver 4
com.symantec.kext.ips 3.9.2f1
com.symantec.kext.pf 5.6.1f9
com.symantec.kext.internetSecurity 5.3.1f8
com.apple.driver.AppleIntelMCEReporter 104
com.apple.filesystems.afpfs 11.1
com.apple.nke.asp-tcp 8.0.1
com.apple.filesystems.smbfs 2.0.2
com.apple.driver.AudioAUUC 1.60
com.apple.filesystems.autofs 3.0
com.apple.iokit.IOBluetoothSerialManager 4.2.6f1
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AGPM 100.14.28
com.apple.driver.X86PlatformShim 1.0.0
com.apple.driver.AppleHDA 2.6.3f4
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.driver.AppleMikeyDriver 2.6.3f4
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.driver.AppleIntelHD4000Graphics 8.2.8
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.AppleBacklight 170.3.5
com.apple.driver.AppleMCCSControl 1.2.5
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.6f1
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.AppleIntelFramebufferCapri 8.2.8
com.apple.driver.SMCMotionSensor 3.0.4d1
com.apple.driver.AppleUSBTCButtons 240.2
com.apple.driver.AppleUSBTCKeyboard 240.2
com.apple.driver.AppleIRController 325.7
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeLZVN 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.6.0
com.apple.driver.AppleFWOHCI 5.0.2
com.apple.driver.AppleUSBHub 683.4.0
com.apple.driver.AirPort.Brcm4331 700.20.22
com.apple.driver.AppleSDXC 1.5.2
com.apple.driver.AppleUSBEHCI 660.4.0
com.apple.iokit.AppleBCM5701Ethernet 3.8.1b2
com.apple.driver.AppleUSBXHCI 683.4.0
com.apple.driver.AppleAHCIPort 3.0.5
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 217.92.1
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 217.92.1
com.apple.security.SecureRemotePassword 1.0
com.apple.nke.ppp 1.9
com.apple.kext.triggers 1.0
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.6
com.apple.driver.DspFuncLib 2.6.3f4
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOBluetoothFamily 4.2.6f1
com.apple.driver.AppleHDAController 2.6.3f4
com.apple.iokit.IOHDAFamily 2.6.3f4
com.apple.iokit.IOSurface 91.1
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.X86PlatformPlugin 1.0.0
com.apple.driver.AppleSMBusController 1.0.12d1
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.6f1
com.apple.driver.IOPlatformPluginFamily 5.7.1d6
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.iokit.IOAcceleratorFamily2 98.22
com.apple.AppleGraphicsDeviceControl 3.6.22
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.driver.AppleSMC 3.1.8
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.driver.AppleUSBMultitouch 240.9
com.apple.iokit.IOUSBHIDDriver 660.4.0
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.3.1
com.apple.iokit.IO80211Family 640.36
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.iokit.IOEthernetAVBController 1.0.3b4
com.apple.driver.mDNSOffloadUserClient 1.0.1b5
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOUSBFamily 683.4.0
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.driver.AppleEFINVRAM 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.pthread 1
Model: MacBookPro9,2, BootROM MBP91.00D3.B08, 2 processors, Intel Core i7, 2.9 GHz, 16 GB, SMC 2.2f44
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x802C, 0x31364B545331473634485A2D314736453120
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x802C, 0x31364B545331473634485A2D314736453120
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.6f1 14216, 3 services, 15 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: Samsung SSD 840 EVO 500GB, 500.11 GB
Serial ATA Device: APPLE HDD TOSHIBA MK7559GSXF, 750.16 GB
USB Device: Hub
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Hub
USB Device: IR Receiver
USB Device: Apple Internal Keyboard / Trackpad
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: MacBook Pro, Apple Inc., 25.1
Help is really appreciated. I dont want to reinstall the entire OS with all the software.
Thanks!

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Try running an Apple Hardware Test:
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Help! Macbook 2008. Unexpected shut off.

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