memory management bsod

I have been getting a memory management bsod for the last few weeks and its driving me crazy. ive pasted the dump file below. can anyone give me any advice how to solve this.Thanks.

Dell Precision 690
4GB ram
Nvidia 3450/4000 fx quadro graphics card.
dell sp2309w monitor


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Dump File : Mini021412-09.dmp
Crash Time : 14/02/2012 15:12:08
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00041284
Parameter 2 : 00000000`075e0001
Parameter 3 : 00000000`00000b7f
Parameter 4 : fffff700`00081000
Caused By Driver : Cdfs.SYS
Caused By Address : Cdfs.SYS+1d1a6860
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-09.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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Dump File : Mini021412-08.dmp
Crash Time : 14/02/2012 14:55:18
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00041284
Parameter 2 : 000007ff`7f2d0001
Parameter 3 : 00000000`00000baf
Parameter 4 : fffff700`00081000
Caused By Driver : BASFND.sys
Caused By Address : BASFND.sys+aa57c20
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-08.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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Dump File : Mini021412-07.dmp
Crash Time : 14/02/2012 14:53:40
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00041284
Parameter 2 : 00000000`090a0001
Parameter 3 : 00000000`00000b4f
Parameter 4 : fffff700`00081000
Caused By Driver : Msfs.SYS
Caused By Address : Msfs.SYS+fd05490
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-07.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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Dump File : Mini021412-06.dmp
Crash Time : 14/02/2012 14:46:02
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00041284
Parameter 2 : 00000000`05670001
Parameter 3 : 00000000`00000bbf
Parameter 4 : fffff700`00081000
Caused By Driver : mrxdav.sys
Caused By Address : mrxdav.sys+1f8b0040
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-06.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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Dump File : Mini021412-05.dmp
Crash Time : 14/02/2012 14:28:29
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00041284
Parameter 2 : 00000000`03dc0001
Parameter 3 : 00000000`0000ff71
Parameter 4 : fffff700`00081000
Caused By Driver : Cdfs.SYS
Caused By Address : Cdfs.SYS+20913970
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-05.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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Dump File : Mini021412-04.dmp
Crash Time : 14/02/2012 13:24:57
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00000400
Parameter 2 : fffff680`00151b00
Parameter 3 : 00000000`00000000
Parameter 4 : fffffa80`0465f3c8
Caused By Driver : Cdfs.SYS
Caused By Address : Cdfs.SYS+1f1ea8b0
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-04.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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Dump File : Mini021412-03.dmp
Crash Time : 14/02/2012 13:13:46
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00041284
Parameter 2 : 00000642`82230001
Parameter 3 : 00000000`00000bcf
Parameter 4 : fffff700`00081000
Caused By Driver : BASFND.sys
Caused By Address : BASFND.sys+17027c20
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-03.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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Dump File : Mini021412-02.dmp
Crash Time : 14/02/2012 12:23:45
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00041284
Parameter 2 : 00000000`001b0001
Parameter 3 : 00000000`00000e0f
Parameter 4 : fffff700`00081000
Caused By Driver : ndiswan.sys
Caused By Address : ndiswan.sys+cbea470
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-02.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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Dump File : Mini021412-01.dmp
Crash Time : 14/02/2012 11:04:10
Bug Check String : PFN_LIST_CORRUPT
Bug Check Code : 0x0000004e
Parameter 1 : 00000000`00000099
Parameter 2 : 00000000`00001530
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : mrxdav.sys
Caused By Address : mrxdav.sys+228e3c20
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+2e890
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\WINDOWS\Minidump\Mini021412-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 3790
Dump File Size : 167,936
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