Help! Your Computer was restarted because of a problem?? iMac iMac 21.5'' 3.06 GHz In

Interval Since Last Panic Report: 459 sec
Panics Since Last Report: 1

Wed May 15 12:33:07 2013
panic(cpu 1 caller 0xffffff8016aa1f9a): "pmap_pv_remove(0xffffff802a5e8800, 0x11e726000, 0x4, 0x4000, 0xffffff80fee03ca4, 0xffffff80fee03c98): pv not on hash, head: 0xffffff80288cc100, 0x7f92e3356000"@/SourceCache/xnu/xnu-2050.22.13/osfmk/i386/pmap_internal.h:826
Backtrace (CPU 1), Frame : Return Address
0xffffff80fee03b30 : 0xffffff8016a1d626
0xffffff80fee03ba0 : 0xffffff8016aa1f9a
0xffffff80fee03cd0 : 0xffffff8016a61733
0xffffff80fee03d90 : 0xffffff8016a62b5b
0xffffff80fee03f20 : 0xffffff8016ab82e0
0xffffff80fee03fb0 : 0xffffff8016acd401

BSD process name corresponding to current thread: warmd

Mac OS version:
12D78

Kernel version:
Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64
Kernel UUID: 3EB7D8A7-C2D3-32EC-80F4-AB37D61492C6
Kernel slide: 0x0000000016800000
Kernel text base: 0xffffff8016a00000
System model name: iMac10,1 (Mac-F2268CC8)

System uptime in nanoseconds: 543954319869
last loaded kext at 40852888114: com.apple.driver.AppleHWSensor 1.9.5d0 (addr 0xffffff7f98085000, size 28672)
last unloaded kext at 208794056726: com.apple.driver.AppleFileSystemDriver 3.0.1 (addr 0xffffff7f971fd000, size 8192)
loaded kexts:
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AudioAUUC 1.60
com.apple.driver.AppleBluetoothMultitouch 75.19
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.iokit.IOBluetoothSerialManager 4.1.3f3
com.apple.driver.AppleUpstreamUserClient 3.5.10
com.apple.driver.AppleMikeyHIDDriver 122
com.apple.driver.AGPM 100.12.87
com.apple.GeForce 8.1.0
com.apple.driver.AppleHDA 2.3.7fc4
com.apple.driver.AppleMikeyDriver 2.3.7fc4
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleBacklight 170.2.5
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.1.3f3
com.apple.driver.ApplePolicyControl 3.3.0
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleLPC 1.6.0
com.apple.driver.AppleMCCSControl 1.1.11
com.apple.filesystems.autofs 3.0
com.apple.iokit.SCSITaskUserClient 3.5.5
com.apple.driver.XsanFilter 404
com.apple.driver.AppleIRController 320.15
com.apple.BootCache 34
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.iokit.IOAHCIBlockStorage 2.3.1
com.apple.driver.AppleUSBCardReader 3.1.7
com.apple.driver.AirPort.Atheros40 600.72.2
com.apple.driver.AppleFWOHCI 4.9.6
com.apple.driver.AppleRTC 1.5
com.apple.driver.AppleAHCIPort 2.5.1
com.apple.driver.AppleUSBHub 5.5.5
com.apple.driver.AppleUSBOHCI 5.2.5
com.apple.driver.AppleUSBEHCI 5.5.0
com.apple.driver.AppleEFINVRAM 1.7
com.apple.nvenet 2.0.19
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIButtons 1.7
com.apple.driver.AppleSMBIOS 1.9
com.apple.driver.AppleACPIEC 1.7
com.apple.driver.AppleAPIC 1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 196.0.0
com.apple.security.quarantine 2
com.apple.nke.applicationfirewall 4.0.39
com.apple.driver.AppleIntelCPUPowerManagement 196.0.0
com.apple.driver.AppleBluetoothHIDKeyboard 170.2
com.apple.driver.AppleHIDKeyboard 170.2
com.apple.driver.IOBluetoothHIDDriver 4.1.3f3
com.apple.driver.AppleMultitouchDriver 235.29
com.apple.iokit.IOSurface 86.0.4
com.apple.iokit.IOSerialFamily 10.0.6
com.apple.iokit.IOBluetoothFamily 4.1.3f3
com.apple.nvidia.nv50hal 8.1.0
com.apple.NVDAResman 8.1.0
com.apple.driver.DspFuncLib 2.3.7fc4
com.apple.iokit.IOAudioFamily 1.8.9fc11
com.apple.kext.OSvKernDSPLib 1.6
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.1.3f3
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.driver.AppleHDAController 2.3.7fc4
com.apple.iokit.IOHDAFamily 2.3.7fc4
com.apple.driver.AppleSMBusPCI 1.0.11d0
com.apple.driver.AppleGraphicsControl 3.3.0
com.apple.iokit.IONDRVSupport 2.3.7
com.apple.driver.AppleSMC 3.1.4d2
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.3.0d51
com.apple.driver.AppleSMBusController 1.0.11d0
com.apple.iokit.IOGraphicsFamily 2.3.7
com.apple.kext.triggers 1.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.5
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOUSBHIDDriver 5.2.5
com.apple.iokit.IOAHCISerialATAPI 2.5.1
com.apple.iokit.IOUSBMassStorageClass 3.5.1
com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.5
com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.5
com.apple.driver.AppleUSBMergeNub 5.5.5
com.apple.driver.AppleUSBComposite 5.2.5
com.apple.iokit.IO80211Family 522.4
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOAHCIFamily 2.3.1
com.apple.iokit.IOUSBUserClient 5.5.5
com.apple.iokit.IOUSBFamily 5.5.5
com.apple.driver.AppleEFIRuntime 1.7
com.apple.iokit.IONetworkingFamily 3.0
com.apple.driver.NVSMU 2.2.9
com.apple.iokit.IOHIDFamily 1.8.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.TMSafetyNet 7
com.apple.security.sandbox 220.2
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.DiskImages 345
com.apple.iokit.IOStorageFamily 1.8
com.apple.driver.AppleKeyStore 28.21
com.apple.driver.AppleACPIPlatform 1.7
com.apple.iokit.IOPCIFamily 2.7.3
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
Model: iMac10,1, BootROM IM101.00CC.B00, 2 processors, Intel Core 2 Duo, 3.06 GHz, 8 GB, SMC 1.52f9
Graphics: NVIDIA GeForce 9400, NVIDIA GeForce 9400, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353237334348302D4346382020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80AD, 0x484D54313235533642465238432D47372020
Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80AD, 0x484D54313235533642465238432D47372020
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.72.0-P2P
Bluetooth: Version 4.1.3f3 11349, 2 service, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: ST3500418ASQ, 500.11 GB
Serial ATA Device: OPTIARC DVD RW AD-5670SC
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0x26500000 / 2
USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0x24400000 / 2
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 / 2
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0x06110000 / 3
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x04500000 / 2

 

It usually restarts itself 2-4x after I turn it on, but after that I get no problems. When it beings to restart itself initially I try and verify disk and tells me it may be corrupted and have to go into recovery mode but I am unable to do so because I dont have Recovery HD. After the initial few restarts I retry Verify Disk and I get no more problems with it telling me The volume iMac HD appears to be ok and the computer no longer restarts. When the verify disk error occurs it tell me that

unused node is not erased (node=49264)
Checking Volume bitmap
Volume Bitmap needs minor repair for orphaned blocks
Checking Volume information
The Volume iMac HD was found corrupt and needs to be repaired
Error:This Disk needs to be repaired us...es window appears, choose Disk Utility.

 

Anything free, or a way to get this free?

 

For some reason I can't start my computer from a dvd. It's not giving me the option when holding down the option key, and holding c doesnt work either. suggestions?