Could anyone tell me why my HP envy 100 would suddenly stop scanning

All of a sudden my HP envy 100 printer will not scan or copy. It did scan and copy at one time but not now.  The white light is moving like it is trying to scan, but the preview comes out just a bunch of lines. I printed it, thinking that maybe the preview was not working, but exactly what was previewed (a bunch of lines) is what printed.
 I am kinda frustrated - first none of the apps work, and now this. The only thing it is still doing successfully is printing from both my notebook and my ipad. I guess I should be grateful for small favors...
 Anyway, if anyone can help with a suggestion I would be most appreciative. I am not a tech geek but I do have some knowledge so I might be able to try a suggestion if anyone has one. Thank you!

is there an error message? try to start a program in the console with
JAVA myclassname
and see if there is an errormessage. or do you have a program which is changing your autoexec.bat so that the classpath is gone?

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    Panics Since Last Report:          17
    Anonymous UUID:                    C5B995AB-BD1A-4703-BA77-1FE55C7A6BCB
    Thu Sep 20 12:05:21 2012
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    0x54db1818 : 0x9d4c9b (0xbea28c 0xc5a800 0xbf8e60 0x0)
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    0x54db1908 : 0xae6601 (0x8f08004 0x100 0x54db1938 0x9c4778)
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    0x54db1ab8 : 0x9dde7c (0x8f08004 0x8f07004 0x0 0x0)
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                dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x928000
                dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x93f000
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                dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x961000
                dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x93f000
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    com.apple.driver.AppleHWSensor     1.9.3d0 - last loaded 36198154746
    com.apple.driver.AGPM     100.12.31
    com.apple.driver.AppleMikeyHIDDriver     1.2.0
    com.apple.driver.AppleHDA     2.0.5f14
    com.apple.driver.AppleMikeyDriver     2.0.5f14
    com.apple.driver.AppleUpstreamUserClient     3.5.7
    com.apple.driver.AppleMCCSControl     1.0.20
    com.apple.driver.AudioAUUC     1.57
    com.apple.driver.SMCMotionSensor     3.0.1d2
    com.apple.driver.AppleIntelHDGraphics     6.4.0
    com.apple.driver.AppleIntelHDGraphicsFB     6.4.0
    com.apple.Dont_Steal_Mac_OS_X     7.0.0
    com.apple.filesystems.autofs     2.1.0
    com.apple.driver.AudioIPCDriver     1.1.6
    com.apple.driver.ACPI_SMC_PlatformPlugin     4.7.0a1
    com.apple.driver.AppleLPC     1.5.1
    com.apple.GeForce     6.4.0
    com.apple.driver.AppleGraphicsControl     2.10.6
    com.apple.kext.AppleSMCLMU     1.5.2d10
    com.apple.driver.AppleUSBTCButtons     201.6
    com.apple.driver.AppleIRController     303.8
    com.apple.driver.AppleUSBTCKeyboard     201.6
    com.apple.BootCache     31.1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib     1.0.0d1
    com.apple.iokit.SCSITaskUserClient     2.6.8
    com.apple.iokit.IOAHCIBlockStorage     1.6.4
    com.apple.driver.AppleUSBHub     4.2.4
    com.apple.driver.AppleFWOHCI     4.7.3
    com.apple.iokit.AppleBCM5701Ethernet     3.0.5b8
    com.apple.driver.AppleEFINVRAM     1.4.0
    com.apple.driver.AppleSmartBatteryManager     160.0.0
    com.apple.driver.AppleAHCIPort     2.1.7
    com.apple.driver.AirPortBrcm43224     428.42.4
    com.apple.driver.AppleUSBEHCI     4.2.4
    com.apple.driver.AppleACPIButtons     1.3.6
    com.apple.driver.AppleRTC     1.3.1
    com.apple.driver.AppleHPET     1.5
    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
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    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.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.AppleSMBusController     1.0.10d0
    com.apple.iokit.IOFireWireIP     2.0.3
    com.apple.iokit.IOSurface     74.2
    com.apple.iokit.IOBluetoothSerialManager     2.4.5f3
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    com.apple.iokit.IOHDAFamily     2.0.5f14
    com.apple.iokit.AppleProfileFamily     41
    com.apple.driver.IOPlatformPluginFamily     4.7.0a1
    com.apple.driver.AppleSMBusPCI     1.0.10d0
    com.apple.driver.AppleBacklightExpert     1.0.1
    com.apple.driver.AppleSMC     3.1.0d5
    com.apple.nvidia.nv50hal     6.4.0
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    com.apple.iokit.IONDRVSupport     2.2.1
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    com.apple.driver.AppleUSBComposite     3.9.0
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    com.apple.iokit.IOBDStorageFamily     1.6
    com.apple.iokit.IODVDStorageFamily     1.6
    com.apple.iokit.IOCDStorageFamily     1.6.1
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    com.apple.iokit.IOFireWireFamily     4.2.6
    com.apple.iokit.IOAHCIFamily     2.0.6
    com.apple.iokit.IO80211Family     320.1
    com.apple.iokit.IONetworkingFamily     1.10
    com.apple.iokit.IOUSBFamily     4.2.4
    com.apple.driver.AppleEFIRuntime     1.4.0
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    com.apple.iokit.IOSMBusFamily     1.1
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    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
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