Windows 7 Random Crashes with BSOD's

[bandwith3636]

Hiya,
I am desperately trying stabilize my Pc.
I am uploading couple of Crash dumps which I collected with

BlueScreenView

from nirsoft.
Thx for any help in advance.
bandwith3636

==================================================Dump File         : 022012-21309-01.dmp
Crash Time        : 20/02/2012 11:54:00
Bug Check String  : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code    : 0x00000050
Parameter 1       : ffffe480`2361d500
Parameter 2       : 00000000`00000001
Parameter 3       : fffff880`04cd6dc0
Parameter 4       : 00000000`00000007
Caused By Driver  : Unknown_Module_00000000`00000000
Caused By Address : Unknown_Module_00000000`00000000+50
File Description  : 
Product Name      : 
Company           : 
File Version      : 
Processor         : x64
Crash Address     : ntoskrnl.exe+7cc40
Stack Address 1   : 
Stack Address 2   : 
Stack Address 3   : 
Computer Name     : 
Full Path         : C:\Windows\Minidump\022012-21309-01.dmp
Processors Count  : 4
Major Version     : 15
Minor Version     : 7601
Dump File Size    : 262,144
==================================================

==================================================Dump File         : 022012-22183-01.dmp
Crash Time        : 20/02/2012 11:50:24
Bug Check String  : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code    : 0x00000050
Parameter 1       : fffff8a0`07c1c000
Parameter 2       : 00000000`00000000
Parameter 3       : fffff880`012e83c9
Parameter 4       : 00000000`00000000
Caused By Driver  : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+7cc40
File Description  : NT Kernel & System
Product Name      : Microsoft® Windows® Operating System
Company           : Microsoft Corporation
File Version      : 6.1.7601.17640 (win7sp1_gdr.110622-1506)
Processor         : x64
Crash Address     : ntoskrnl.exe+7cc40
Stack Address 1   : 
Stack Address 2   : 
Stack Address 3   : 
Computer Name     : 
Full Path         : C:\Windows\Minidump\022012-22183-01.dmp
Processors Count  : 4
Major Version     : 15
Minor Version     : 7601
Dump File Size    : 274,944
==================================================

==================================================
Dump File : 021912-25084-01.dmp
Crash Time : 19/02/2012 19:05:45
Bug Check String : KMODE_EXCEPTION_NOT_HANDLED
Bug Check Code : 0x0000001e
Parameter 1 : 00000000`00000000
Parameter 2 : 00000000`00000000
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+7cc10
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.17640 (win7sp1_gdr.110622-1506)
Processor : x64
Crash Address : ntoskrnl.exe+7cc10
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\021912-25084-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 274,944
==================================================[/CODE]
[/CODE]
==================================================
Dump File : 021812-23602-01.dmp
Crash Time : 18/02/2012 21:58:04
Bug Check String : SYSTEM_SERVICE_EXCEPTION
Bug Check Code : 0x0000003b
Parameter 1 : 00000000`c0000005
Parameter 2 : fffff880`01498099
Parameter 3 : fffff880`03b40be0
Parameter 4 : 00000000`00000000
Caused By Driver : aswSP.SYS
Caused By Address : aswSP.SYS+d099
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+7cc40
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\021812-23602-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 274,944
==================================================[/CODE]
[/CODE]==================================================
Dump File : 021812-22058-01.dmp
Crash Time : 18/02/2012 21:55:13
Bug Check String : DRIVER_IRQL_NOT_LESS_OR_EQUAL
Bug Check Code : 0x000000d1
Parameter 1 : 00000000`000001a4
Parameter 2 : 00000000`00000007
Parameter 3 : 00000000`00000008
Parameter 4 : 00000000`000001a4
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+7cc40
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.17640 (win7sp1_gdr.110622-1506)
Processor : x64
Crash Address : ntoskrnl.exe+7cc40
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\021812-22058-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 274,888
==================================================[/CODE]
[/CODE]

==================================================
Dump File : 021812-22604-01.dmp
Crash Time : 18/02/2012 10:15:56
Bug Check String : KMODE_EXCEPTION_NOT_HANDLED
Bug Check Code : 0x0000001e
Parameter 1 : ffffffff`c0000005
Parameter 2 : fffff880`09249af0
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : Unknown_Module_00000000`00000000
Caused By Address : Unknown_Module_00000000`00000000+10
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address :
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\021812-22604-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
==================================================[/CODE]
[/CODE]==================================================
Dump File : 021712-21465-01.dmp
Crash Time : 17/02/2012 09:14:50
Bug Check String : PFN_LIST_CORRUPT
Bug Check Code : 0x0000004e
Parameter 1 : 00000000`00000007
Parameter 2 : 00000000`0003313b
Parameter 3 : 00000000`0003223a
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+7cc40
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.17640 (win7sp1_gdr.110622-1506)
Processor : x64
Crash Address : ntoskrnl.exe+7cc40
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\021712-21465-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 274,944
==================================================[/CODE]
[/CODE]==================================================
Dump File : 021512-20233-01.dmp
Crash Time : 15/02/2012 08:56:01
Bug Check String : KMODE_EXCEPTION_NOT_HANDLED
Bug Check Code : 0x0000001e
Parameter 1 : 00000000`00000000
Parameter 2 : 00000000`00000000
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver :
Caused By Address :
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address :
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\021512-20233-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
==================================================[/CODE]
[/CODE]==================================================
Dump File : 021512-21964-01.dmp
Crash Time : 15/02/2012 08:31:03
Bug Check String : PFN_LIST_CORRUPT
Bug Check Code : 0x0000004e
Parameter 1 : 00000000`00000002
Parameter 2 : 00000000`0000d8c0
Parameter 3 : 00000000`0011ffff
Parameter 4 : 00000000`00000001
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+7cc40
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.17640 (win7sp1_gdr.110622-1506)
Processor : x64
Crash Address : ntoskrnl.exe+7cc40
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\021512-21964-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 274,944
==================================================[/CODE]
[/CODE]==================================================
Dump File : 021412-20077-01.dmp
Crash Time : 14/02/2012 10:27:44
Bug Check String : KMODE_EXCEPTION_NOT_HANDLED
Bug Check Code : 0x0000001e
Parameter 1 : ffffffff`c000001d
Parameter 2 : fffff800`02aed790
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+7cc40
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.17640 (win7sp1_gdr.110622-1506)
Processor : x64
Crash Address : ntoskrnl.exe+7cc40
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\021412-20077-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 274,888
==================================================/CODE]
[/CODE]