Multiple BSODs, need help please.

[Qcio]

Hello, over the past few months ive got few crashes on my old laptop, here is the info I got from bluescreenviewer. Should I blame gpu driver? Or something else going on? Hope someone can help me.

Pavilion dv6500
Core2Duo T5450 1.66ghz
GeForce 8400M GS
2GB RAM
Vista 32bit

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Dump File : Mini032314-01.dmp
Crash Time : 2014-03-23 19:13:31
Bug Check String :
Bug Check Code : 0x00000116
Parameter 1 : 0x8680d510
Parameter 2 : 0x8c612f40
Parameter 3 : 0x00000000
Parameter 4 : 0x00000002
Caused By Driver : nvlddmkm.sys
Caused By Address : nvlddmkm.sys+df40
File Description : NVIDIA Windows Kernel Mode Driver, Version 187.66
Product Name : NVIDIA Windows Kernel Mode Driver, Version 187.66
Company : NVIDIA Corporation
File Version : 8.16.11.8766
Processor : 32-bit
Crash Address : ntkrnlpa.exe+cd9bd
Stack Address 1 : dxgkrnl.sys+7bf99
Stack Address 2 : dxgkrnl.sys+7cc89
Stack Address 3 : dxgkrnl.sys+194fd
Computer Name :
Full Path : C:\Windows\Minidump\Mini032314-01.dmp
Processors Count : 2
Major Version : 15
Minor Version : 6002
Dump File Size : 182 808
Dump File Time : 2014-03-23 19:17:24
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Dump File : Mini021714-01.dmp
Crash Time : 2014-02-17 21:22:47
Bug Check String : SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
Bug Check Code : 0x1000007e
Parameter 1 : 0xc0000005
Parameter 2 : 0x8d0402d2
Parameter 3 : 0x97d2b980
Parameter 4 : 0x97d2b67c
Caused By Driver : dxgkrnl.sys
Caused By Address : dxgkrnl.sys+3d2d2
File Description : DirectX Graphics Kernel
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 7.0.6002.18107 (vistasp2_gdr_win7ip_dgt(wmbla).090924-1550)
Processor : 32-bit
Crash Address : dxgkrnl.sys+3d2d2
Stack Address 1 : dxgkrnl.sys+93661
Stack Address 2 : dxgkrnl.sys+348d2
Stack Address 3 : dxgkrnl.sys+2ec07
Computer Name :
Full Path : C:\Windows\Minidump\Mini021714-01.dmp
Processors Count : 2
Major Version : 15
Minor Version : 6002
Dump File Size : 159 200
Dump File Time : 2014-02-17 21:23:52
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Dump File : Mini091313-01.dmp
Crash Time : 2013-09-13 20:06:48
Bug Check String : DRIVER_POWER_STATE_FAILURE
Bug Check Code : 0x0000009f
Parameter 1 : 0x00000003
Parameter 2 : 0x8dd1c030
Parameter 3 : 0x8dd25530
Parameter 4 : 0x84dca208
Caused By Driver : ntkrnlpa.exe
Caused By Address : ntkrnlpa.exe+cd9bd
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.0.6002.18881 (vistasp2_gdr.130707-1535)
Processor : 32-bit
Crash Address : ntkrnlpa.exe+cd9bd
Stack Address 1 : ntkrnlpa.exe+3139b
Stack Address 2 : ntkrnlpa.exe+30fb8
Stack Address 3 : ntkrnlpa.exe+aa1eb
Computer Name :
Full Path : C:\Windows\Minidump\Mini091313-01.dmp
Processors Count : 2
Major Version : 15
Minor Version : 6002
Dump File Size : 159 152
Dump File Time : 2013-09-13 20:08:21
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[officialexpert]

It seems like BSOD cause of PSU & GPU Driver.