MSI Afterburner and Riva Tuner (along with EVGA Precision) are known to cause BSOD's in some Windows systems (it's driver is usually RTCore64.sys). Please un-install them immediately!

If you're overclocking, please stop the overclock while we're troubleshooting. Feel free to resume the overclock once the system has been stabilized.

Out of the last 4 memory dumps there were 4 different BSOD error codes. The differing error codes are usually symptomatic of a lower level problem within the system. They are usually caused by one of these things:
- borked (broken) hardware (several different procedures used to isolate the problem device)
- BIOS issues (check for updates at the motherboard manufacturer's website)
- overclocking/overheating - You'll know if you're overclocking or not. If uncertain we can suggest things to check.
- missing Windows Updates
- compatibility issues (3rd party hardware/drivers), older systems, or even pirated systems
- low-level driver problems
- or even malware (scanned for when we ask for hardware diagnostics from Initial Hardware Diagnostics or Hardware Diagnostics ).

Please start with these free hardware diagnostics: Hardware Diagnostics

Please be sure that you have ALL available Windows Updates
Please update your system with the latest Win8.1 compatible drivers from the AsRock website (in particular, update the chipset drivers and any USB controller drivers that you may be able to find. I think this is the link for your system: ASRock > Z77 Extreme4-M

Also update your SplashTop drivers.

Analysis:
The following is for informational purposes only.
Code:
**************************Sat Sep 27 03:05:46.572 2014 (UTC - 4:00)**************************
Loading Dump File [C:\Users\John\SysnativeBSODApps\092714-8281-01.dmp]
Windows 8 Kernel Version 9600 MP (4 procs) Free x64
Built by: 9600.17238.amd64fre.winblue_gdr.140723-2018
System Uptime:0 days 0:00:09.235
*** ERROR: Module load completed but symbols could not be loaded for Ntfs.sys
Probably caused by :memory_corruption
BugCheck 24, {b500190637, ffffd000342788e8, ffffd000342780f0, fffff80051183997}
BugCheck Info: NTFS_FILE_SYSTEM (24)
Arguments: 
Arg1: 000000b500190637
Arg2: ffffd000342788e8
Arg3: ffffd000342780f0
Arg4: fffff80051183997
BUGCHECK_STR:  0x24
DEFAULT_BUCKET_ID:  CODE_CORRUPTION
PROCESS_NAME:  AppleMobileDev
FAILURE_BUCKET_ID: MEMORY_CORRUPTION_ONE_BIT
CPUID:        "Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz"
MaxSpeed:     3400
CurrentSpeed: 3400
  BIOS Version                  P1.80
  BIOS Release Date             08/07/2013
  Manufacturer                  To Be Filled By O.E.M.
  Product Name                  To Be Filled By O.E.M.
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
**************************Sun Sep 14 10:57:27.321 2014 (UTC - 4:00)**************************
Loading Dump File [C:\Users\John\SysnativeBSODApps\091414-11828-01.dmp]
Windows 8 Kernel Version 9600 MP (4 procs) Free x64
Built by: 9600.17085.amd64fre.winblue_gdr.140330-1035
System Uptime:0 days 0:02:07.985
Probably caused by :Unknown_Image ( ANALYSIS_INCONCLUSIVE )
BugCheck 109, {a3a01f59020fb59c, 0, d4f5fc5c8a933657, 102}
BugCheck Info: CRITICAL_STRUCTURE_CORRUPTION (109)
Arguments: 
Arg1: a3a01f59020fb59c, Reserved
Arg2: 0000000000000000, Reserved
Arg3: d4f5fc5c8a933657, Failure type dependent information
Arg4: 0000000000000102, Type of corrupted region, can be
    0 : A generic data region
    1 : Modification of a function or .pdata
    2 : A processor IDT
    3 : A processor GDT
    4 : Type 1 process list corruption
    5 : Type 2 process list corruption
    6 : Debug routine modification
    7 : Critical MSR modification
BUGCHECK_STR:  0x109
DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT
PROCESS_NAME:  csrss.exe
FAILURE_BUCKET_ID: MEMORY_CORRUPTION_ONE_BIT
CPUID:        "Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz"
MaxSpeed:     3400
CurrentSpeed: 3400
  BIOS Version                  P1.80
  BIOS Release Date             08/07/2013
  Manufacturer                  To Be Filled By O.E.M.
  Product Name                  To Be Filled By O.E.M.
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
**************************Fri Aug 29 17:34:26.143 2014 (UTC - 4:00)**************************
Loading Dump File [C:\Users\John\SysnativeBSODApps\082914-8953-01.dmp]
Windows 8 Kernel Version 9600 MP (4 procs) Free x64
Built by: 9600.17085.amd64fre.winblue_gdr.140330-1035
System Uptime:0 days 0:08:08.808
Probably caused by :ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+2b8ba )
BugCheck 50, {48b40000, 1, 68998f0a, 8}
BugCheck Info: PAGE_FAULT_IN_NONPAGED_AREA (50)
Arguments: 
Arg1: 0000000048b40000, memory referenced.
Arg2: 0000000000000001, value 0 = read operation, 1 = write operation.
Arg3: 0000000068998f0a, If non-zero, the instruction address which referenced the bad memory
    address.
Arg4: 0000000000000008, (reserved)
BUGCHECK_STR:  AV
DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT
PROCESS_NAME:  BioShockInfini
FAILURE_BUCKET_ID: AV_nt!_??_::FNODOBFM::_string_
CPUID:        "Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz"
MaxSpeed:     3400
CurrentSpeed: 3400
  BIOS Version                  P1.80
  BIOS Release Date             08/07/2013
  Manufacturer                  To Be Filled By O.E.M.
  Product Name                  To Be Filled By O.E.M.
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
**************************Wed Aug  6 17:28:23.358 2014 (UTC - 4:00)**************************
Loading Dump File [C:\Users\John\SysnativeBSODApps\080614-8687-01.dmp]
Windows 8 Kernel Version 9600 MP (4 procs) Free x64
Built by: 9600.17041.amd64fre.winblue_gdr.140305-1710
System Uptime:0 days 0:41:07.023
Probably caused by :dxgmms1.sys ( dxgmms1!VIDMM_GLOBAL::PrepareDmaBuffer+9b1 )
BugCheck 1000007E, {ffffffffc0000005, fffff801c9ec2931, ffffd001acdb94d8, ffffd001acdb8ce0}
BugCheck Info: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M (1000007e)
Arguments: 
Arg1: ffffffffc0000005, The exception code that was not handled
Arg2: fffff801c9ec2931, The address that the exception occurred at
Arg3: ffffd001acdb94d8, Exception Record Address
Arg4: ffffd001acdb8ce0, Context Record Address
PROCESS_NAME:  System
BUGCHECK_STR:  AV
DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT
FAILURE_BUCKET_ID: AV_dxgmms1!VIDMM_GLOBAL::PrepareDmaBuffer
CPUID:        "Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz"
MaxSpeed:     3400
CurrentSpeed: 3400
  BIOS Version                  P1.80
  BIOS Release Date             08/07/2013
  Manufacturer                  To Be Filled By O.E.M.
  Product Name                  To Be Filled By O.E.M.
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
3rd Party Drivers:
The following is for information purposes only.
Any drivers in red should be updated or removed from your system. And should have been discussed in the body of my post.
Code:
**************************Sat Sep 27 03:05:46.572 2014 (UTC - 4:00)**************************
GEARAspiWDM.sys      Thu May  3 15:56:17 2012 (4FA2E2E1)
asahci64.sys         Tue Jul 17 23:15:00 2012 (50062A34)
sthid.sys            Tue Feb 19 00:34:44 2013 (51230EF4)
cmudaxp.sys          Thu Apr 11 06:45:54 2013 (51669462)
Rt630x64.sys         Fri Jul 26 03:01:35 2013 (51F21ECF)
iaStorA.sys          Thu Aug  1 21:39:52 2013 (51FB0DE8)
intelppm.sys         Thu Aug 22 04:46:35 2013 (5215CFEB)
TeeDriverx64.sys     Thu Sep  5 14:02:18 2013 (5228C72A)
iwdbus.sys           Thu Sep 26 17:38:04 2013 (5244A93C)
igdkmd64.sys         Tue Oct  1 13:06:57 2013 (524B0131)


xusb22.sys           Tue Mar 18 04:18:41 2014 (53280161)
nvhda64v.sys         Mon Jul 21 10:17:53 2014 (53CD2111)
nvvad64v.sys         Thu Sep  4 13:10:48 2014 (54089D18)
nvlddmkm.sys         Sat Sep 13 15:59:50 2014 (5414A236)
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
**************************Sun Sep 14 10:57:27.321 2014 (UTC - 4:00)**************************
nvhda64v.sys         Thu Nov 28 08:38:09 2013 (52974741)
nvvad64v.sys         Fri Mar 28 09:32:06 2014 (533579D6)
nvlddmkm.sys         Wed Jul  2 13:42:02 2014 (53B4446A)
NvStreamKms.sys      Fri Jul 25 07:35:56 2014 (53D2411C)
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
**************************Wed Aug  6 17:28:23.358 2014 (UTC - 4:00)**************************
NvStreamKms.sys      Thu May 22 12:43:14 2014 (537E2922)
nvlddmkm.sys         Thu Jun 12 20:18:13 2014 (539A4345)
http://www.carrona.org/drivers/driver.php?id=GEARAspiWDM.sys
http://www.carrona.org/drivers/driver.php?id=asahci64.sys
http://www.carrona.org/drivers/driver.php?id=sthid.sys
http://www.carrona.org/drivers/driver.php?id=cmudaxp.sys
http://www.carrona.org/drivers/driver.php?id=Rt630x64.sys
http://www.carrona.org/drivers/driver.php?id=iaStorA.sys
http://www.carrona.org/drivers/driver.php?id=intelppm.sys
http://www.carrona.org/drivers/driver.php?id=TeeDriverx64.sys
http://www.carrona.org/drivers/driver.php?id=iwdbus.sys
http://www.carrona.org/drivers/driver.php?id=igdkmd64.sys
http://www.carrona.org/drivers/driver.php?id=xusb22.sys
http://www.carrona.org/drivers/driver.php?id=nvhda64v.sys
http://www.carrona.org/drivers/driver.php?id=nvvad64v.sys
http://www.carrona.org/drivers/driver.php?id=nvlddmkm.sys
http://www.carrona.org/drivers/driver.php?id=nvhda64v.sys
http://www.carrona.org/drivers/driver.php?id=nvvad64v.sys
http://www.carrona.org/drivers/driver.php?id=nvlddmkm.sys
http://www.carrona.org/drivers/driver.php?id=NvStreamKms.sys
http://www.carrona.org/drivers/driver.php?id=NvStreamKms.sys
http://www.carrona.org/drivers/driver.php?id=nvlddmkm.sys