MacBook Pro (Mid 2010) restarts for no reason?

My macbook keeps restarting itself randomly and then comes up with an error report. Can anyone help with what could be causing this problem please?

MacBook Pro 15" Mid 2010, Processor: 2.66 GHz Intel Core i7, Graphics: NVIDIA GeForce GT 330M 512MB, OS X Yosemite (10.10).

Here is the error report that came up today;

Anonymous UUID: EAB7BC56-85A3-DFE0-0305-F768F80E1477

Thu Oct 8 20:04:52 2015

*** Panic Report ***

panic(cpu 0 caller 0xffffff7f84151f63): "GPU Panic: [<None>] 5 3 7f 0 0 0 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd2000000 0xffffff80a920e000 0x0a5480a2, D0, P3/4\n"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.7.21/src/Apple MuxControl/kext/GPUPanic.cpp:127

Backtrace (CPU 0), Frame : Return Address

0xffffff809827b5a0 : 0xffffff800153a811

0xffffff809827b620 : 0xffffff7f84151f63

0xffffff809827b700 : 0xffffff7f820c2b9f

0xffffff809827b7c0 : 0xffffff7f8218c18e

0xffffff809827b800 : 0xffffff7f8218c1fe

0xffffff809827b870 : 0xffffff7f8240b056

0xffffff809827b9a0 : 0xffffff7f821af82d

0xffffff809827b9c0 : 0xffffff7f820c95f1

0xffffff809827ba70 : 0xffffff7f820c70fc

0xffffff809827bc70 : 0xffffff7f820c9225

0xffffff809827bd60 : 0xffffff7f8375b925

0xffffff809827bdc0 : 0xffffff7f837585ef

0xffffff809827be40 : 0xffffff7f8374295a

0xffffff809827be70 : 0xffffff7f836fe27c

0xffffff809827be90 : 0xffffff7f836ff5ad

0xffffff809827bed0 : 0xffffff7f836fc1ff

0xffffff809827bef0 : 0xffffff8001ad7162

0xffffff809827bf40 : 0xffffff8001ad507d

0xffffff809827bf80 : 0xffffff8001ad5146

0xffffff809827bfb0 : 0xffffff80016192c7

Kernel Extensions in backtrace:

com.apple.driver.AppleMuxControl(3.7.21)[32B7E2DE-1F9D-3555-B687-7A76A62B81D2]@ 0xffffff7f84143000->0xffffff7f84156fff

dependency: com.apple.driver.AppleGraphicsControl(3.7.21)[62689710-EEA7-307A-AC83-B8F25DA88 A6A]@0xffffff7f8413b000

dependency: com.apple.iokit.IOACPIFamily(1.4)[70E2B65E-A91A-3522-A1A0-79FD63EABB4C]@0xfffff f7f81fa9000

dependency: com.apple.iokit.IOPCIFamily(2.9)[766FC23F-452C-3B74-951C-598BB17BCF06]@0xffffff 7f81d24000

dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[6D99A3BE-D531-3780-880B-13F2FC894A4A]@0 xffffff7f8201b000

dependency: com.apple.driver.AppleBacklightExpert(1.1.0)[0183904C-6A16-32C4-9405-EEFD7F820B 02]@0xffffff7f8413e000

com.apple.nvidia.classic.NVDAResmanTesla(10.0)[796AE430-39FB-3255-8161-D52AFA28 EE2B]@0xffffff7f82072000->0xffffff7f822dbfff

dependency: com.apple.iokit.IOPCIFamily(2.9)[766FC23F-452C-3B74-951C-598BB17BCF06]@0xffffff 7f81d24000

dependency: com.apple.iokit.IONDRVSupport(2.4.1)[F4738C55-B507-3627-A9CA-3D29A5230A03]@0xff ffff7f82062000

dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[6D99A3BE-D531-3780-880B-13F2FC894A4A]@0 xffffff7f8201b000

com.apple.nvidia.classic.NVDANV50HalTesla(10.0)[7FE40648-F15F-3E18-91E2-FDDDF4C DA355]@0xffffff7f822e6000->0xffffff7f8258ffff

dependency: com.apple.nvidia.classic.NVDAResmanTesla(10.0.0)[796AE430-39FB-3255-8161-D52AFA 28EE2B]@0xffffff7f82072000

dependency: com.apple.iokit.IOPCIFamily(2.9)[766FC23F-452C-3B74-951C-598BB17BCF06]@0xffffff 7f81d24000

com.apple.GeForceTesla(10.0)[67CD214F-0F26-3BEF-BAD0-CF0F83C2616D]@0xffffff7f83 6f5000->0xffffff7f837c2fff

dependency: com.apple.iokit.IOPCIFamily(2.9)[766FC23F-452C-3B74-951C-598BB17BCF06]@0xffffff 7f81d24000

dependency: com.apple.iokit.IONDRVSupport(2.4.1)[F4738C55-B507-3627-A9CA-3D29A5230A03]@0xff ffff7f82062000

dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[6D99A3BE-D531-3780-880B-13F2FC894A4A]@0 xffffff7f8201b000

dependency: com.apple.nvidia.classic.NVDAResmanTesla(10.0.0)[796AE430-39FB-3255-8161-D52AFA 28EE2B]@0xffffff7f82072000

BSD process name corresponding to current thread: kernel_task

Mac OS version:

14A389

Kernel version:

Darwin Kernel Version 14.0.0: Fri Sep 19 00:26:44 PDT 2014; root:xnu-2782.1.97~2/RELEASE_X86_64

Kernel UUID: 89E10306-BC78-3A3B-955C-7C4922577E61

Kernel slide: 0x0000000001200000

Kernel text base: 0xffffff8001400000

__HIB text base: 0xffffff8001300000

System model name: MacBookPro6,2 (Mac-F22586C8)

System uptime in nanoseconds: 630328085434

last loaded kext at 40424186078: com.apple.driver.AudioAUUC 1.70 (addr 0xffffff7f839e2000, size 32768)

last unloaded kext at 172026236876: com.apple.driver.AppleUSBUHCI 656.4.1 (addr 0xffffff7f828df000, size 65536)

loaded kexts:

com.apple.driver.AudioAUUC 1.70

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AGPM 100.14.37

com.apple.filesystems.autofs 3.0

com.apple.iokit.IOBluetoothSerialManager 4.3.0f10

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.driver.AppleMikeyDriver 266.5

com.apple.driver.AppleHDA 266.5

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.GeForceTesla 10.0.0

com.apple.driver.AppleIntelHDGraphics 10.0.0

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.driver.AppleIntelHDGraphicsFB 10.0.0

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.0f10

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleHWAccess 1

com.apple.driver.AppleHV 1

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.driver.AppleSMCLMU 2.0.4d1

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleLPC 1.7.3

com.apple.driver.AppleMuxControl 3.7.21

com.apple.driver.AppleMCCSControl 1.2.10

com.apple.driver.SMCMotionSensor 3.0.4d1

com.apple.driver.AppleUSBTCButtons 240.2

com.apple.driver.AppleUSBCardReader 3.5.0

com.apple.driver.AppleUSBTCKeyboard 240.2

com.apple.driver.AppleIRController 327.5

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 35

com.apple.iokit.SCSITaskUserClient 3.7.0

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.6.5

com.apple.driver.AirPort.Brcm4331 800.20.24

com.apple.driver.AppleAHCIPort 3.0.7

com.apple.driver.AppleUSBHub 705.4.1

com.apple.driver.AppleFWOHCI 5.5.2

com.apple.iokit.AppleBCM5701Ethernet 10.1.2b3

com.apple.driver.AppleUSBEHCI 705.4.14

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleACPIButtons 3.1

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 3.1

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0

com.apple.nke.applicationfirewall 161

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.AppleIntelCPUPowerManagement 218.0.0

com.apple.AppleGraphicsDeviceControl 3.7.21

com.apple.kext.triggers 1.0

com.apple.iokit.IOSerialFamily 11

com.apple.driver.DspFuncLib 266.5

com.apple.kext.OSvKernDSPLib 1.15

com.apple.iokit.IOAudioFamily 200.6

com.apple.vecLib.kext 1.2.0

com.apple.nvidia.classic.NVDANV50HalTesla 10.0.0

com.apple.nvidia.classic.NVDAResmanTesla 10.0.0

com.apple.iokit.IOSurface 97

com.apple.iokit.IOFireWireIP 2.2.6

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.0f10

com.apple.iokit.IOBluetoothFamily 4.3.0f10

com.apple.driver.AppleSMBusPCI 1.0.12d1

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.driver.AppleHDAController 266.5

com.apple.iokit.IOHDAFamily 266.5

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.IOPlatformPluginFamily 5.8.0d49

com.apple.driver.AppleGraphicsControl 3.7.21

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.driver.AppleSMBusController 1.0.13d1

com.apple.iokit.IOGraphicsFamily 2.4.1

com.apple.driver.AppleSMC 3.1.9

com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.0

com.apple.iokit.IOUSBMassStorageClass 3.7.0

com.apple.driver.AppleUSBMultitouch 245.2

com.apple.iokit.IOUSBHIDDriver 705.4.0

com.apple.driver.CoreStorage 471

com.apple.driver.AppleUSBMergeNub 705.4.0

com.apple.driver.AppleUSBComposite 705.4.9

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.0

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.iokit.IOAHCISerialATAPI 2.6.1

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.0

com.apple.iokit.IO80211Family 700.52

com.apple.iokit.IOAHCIFamily 2.7.0

com.apple.iokit.IOFireWireFamily 4.5.6

com.apple.iokit.IOEthernetAVBController 1.0.3b3

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IONetworkingFamily 3.2

com.apple.iokit.IOUSBFamily 705.4.14

com.apple.driver.AppleEFINVRAM 2.0

com.apple.driver.AppleEFIRuntime 2.0

com.apple.iokit.IOHIDFamily 2.0.0

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 300.0

com.apple.kext.AppleMatch 1.0.0d1

com.apple.driver.AppleKeyStore 2

com.apple.driver.AppleMobileFileIntegrity 1.0.5

com.apple.driver.AppleCredentialManager 1.0

com.apple.driver.DiskImages 389.1

com.apple.iokit.IOStorageFamily 2.0

com.apple.iokit.IOReportFamily 31

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 3.1

com.apple.iokit.IOPCIFamily 2.9

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.corecrypto 1.0

com.apple.kec.Libm 1

com.apple.kec.pthread 1