Crashes and restarts randomly

[font=lucida console]**************************Sat Mar 30 20:46:48.961 2013 (UTC - 4:00)**************************
Loading Dump File [C:\Users\Owner\SysnativeBSODApps\033113-19296-01.dmp]
Windows 8 Kernel Version 9200 MP (4 procs) Free x64
Built by: [B]9200[/B].16496.amd64fre.win8_gdr.130108-1504
System Uptime:[B]0 days 10:20:25.141[/B]
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
Probably caused by :[B]nvlddmkm.sys ( nvlddmkm+233e34 )[/B]
BugCheck [B]133, {0, 281, 280, 0}[/B]
BugCheck Info: [url=http://www.carrona.org/bsodindx.html#0x00000133]DPC_WATCHDOG_VIOLATION (133)[/url]
Arguments: 
Arg1: 0000000000000000, A single DPC or ISR exceeded its time allotment. The offending
    component can usually be identified with a stack trace.
Arg2: 0000000000000281, The DPC time count (in ticks).
Arg3: 0000000000000280, The DPC time allotment (in ticks).
Arg4: 0000000000000000
BUGCHECK_STR:  0x133
DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT
PROCESS_NAME:  System
FAILURE_BUCKET_ID: [B]0x133_DPC_nvlddmkm+233e34[/B]
CPUID:        "Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz"
MaxSpeed:     2400
CurrentSpeed: [B]2395[/B]
  BIOS Version                  N45SF.223
  BIOS Release Date             01/19/2012
  Manufacturer                  ASUSTeK Computer Inc.
  Product Name                  N45SF
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
**************************Sat Mar 30 10:25:45.656 2013 (UTC - 4:00)**************************
Loading Dump File [C:\Users\Owner\SysnativeBSODApps\033013-16984-01.dmp]
Windows 8 Kernel Version 9200 MP (4 procs) Free x64
Built by: [B]9200[/B].16496.amd64fre.win8_gdr.130108-1504
System Uptime:[B]0 days 0:06:12.344[/B]
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
Probably caused by :[B]nvlddmkm.sys ( nvlddmkm+1d2ffe )[/B]
BugCheck [B]133, {0, 281, 280, 0}[/B]
BugCheck Info: [url=http://www.carrona.org/bsodindx.html#0x00000133]DPC_WATCHDOG_VIOLATION (133)[/url]
Arguments: 
Arg1: 0000000000000000, A single DPC or ISR exceeded its time allotment. The offending
    component can usually be identified with a stack trace.
Arg2: 0000000000000281, The DPC time count (in ticks).
Arg3: 0000000000000280, The DPC time allotment (in ticks).
Arg4: 0000000000000000
BUGCHECK_STR:  0x133
DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT
PROCESS_NAME:  System
FAILURE_BUCKET_ID: [B]0x133_DPC_nvlddmkm+1d2ffe[/B]
CPUID:        "Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz"
MaxSpeed:     2400
CurrentSpeed: [B]2395[/B]
  BIOS Version                  N45SF.223
  BIOS Release Date             01/19/2012
  Manufacturer                  ASUSTeK Computer Inc.
  Product Name                  N45SF
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
**************************Sat Mar 30 10:09:47.809 2013 (UTC - 4:00)**************************
Loading Dump File [C:\Users\Owner\SysnativeBSODApps\033013-27796-01.dmp]
Windows 8 Kernel Version 9200 MP (4 procs) Free x64
Built by: [B]9200[/B].16496.amd64fre.win8_gdr.130108-1504
System Uptime:[B]5 days 6:04:34.391[/B]
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
Probably caused by :[B]nvlddmkm.sys ( nvlddmkm+1fadf9 )[/B]
BugCheck [B]133, {0, 281, 280, 0}[/B]
BugCheck Info: [url=http://www.carrona.org/bsodindx.html#0x00000133]DPC_WATCHDOG_VIOLATION (133)[/url]
Arguments: 
Arg1: 0000000000000000, A single DPC or ISR exceeded its time allotment. The offending
    component can usually be identified with a stack trace.
Arg2: 0000000000000281, The DPC time count (in ticks).
Arg3: 0000000000000280, The DPC time allotment (in ticks).
Arg4: 0000000000000000
BUGCHECK_STR:  0x133
DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT
PROCESS_NAME:  System
FAILURE_BUCKET_ID: [B]0x133_DPC_nvlddmkm+1fadf9[/B]
CPUID:        "Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz"
MaxSpeed:     2400
CurrentSpeed: [B]2395[/B]
  BIOS Version                  N45SF.223
  BIOS Release Date             01/19/2012
  Manufacturer                  ASUSTeK Computer Inc.
  Product Name                  N45SF
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
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[font=lucida console]**************************Sat Mar 30 20:46:48.961 2013 (UTC - 4:00)**************************
[COLOR=RED][B]hamachi.sys                 Thu Feb 19 05:36:41 2009 (499D3639)[/B][/COLOR]
[COLOR=RED][B]ASMMAP64.sys                Thu Jul  2 05:13:26 2009 (4A4C7A36)[/B][/COLOR]
[COLOR=RED][B]tap0901t.sys                Wed Sep 16 02:02:43 2009 (4AB07F83)[/B][/COLOR]
[COLOR=RED][B]atkwmiacpi64.sys            Mon Jul 26 01:56:49 2010 (4C4D23A1)[/B][/COLOR]
[COLOR=RED][B]HECIx64.sys                 Tue Oct 19 19:33:43 2010 (4CBE2AD7)[/B][/COLOR]
[COLOR=RED][B]AiCharger.sys               Fri Feb 25 04:41:45 2011 (4D677959)[/B][/COLOR]
[COLOR=RED][B]ETD.sys                     Wed Apr 13 03:01:46 2011 (4DA54A5A)[/B][/COLOR]
[COLOR=RED][B]RTKVHD64.sys                Tue Jul 26 05:22:00 2011 (4E2E8738)[/B][/COLOR]
L1C63x64.sys                Wed Feb 15 01:55:09 2012 (4F3B56CD)
athrx.sys                   Wed Mar 21 23:26:22 2012 (4F6A9BDE)
idmwfp.sys                  Mon Apr 23 09:14:15 2012 (4F9555A7)
GEARAspiWDM.sys             Thu May  3 15:56:17 2012 (4FA2E2E1)
btfilter.sys                Fri Jun 29 03:00:07 2012 (4FED5277)
dump_storahci.sys           Wed Jul 25 22:30:35 2012 (5010ABCB)
igdkmd64.sys                Wed Sep 26 15:49:04 2012 (50635C30)
intelppm.sys                Mon Nov  5 22:55:02 2012 (50988A16)
nvlddmkm.sys                Fri Nov 30 22:24:02 2012 (50B97852)
nvpciflt.sys                Fri Nov 30 22:24:28 2012 (50B9786C)
nvkflt.sys                  Fri Nov 30 22:24:39 2012 (50B97877)
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