BSOD bugcheck 0x000000d1

When I turn on my Windows 7 computer or wake it up from hibernate status then it crashes after about 10 mto 15 min but during restart system "suggests" normal start instead of restart in a Safe Mode. It reports bugcheck 0x000000d1 and points out NETw5s64.sys file.

This is the information that I received for the error that my windows detected:
Windows has recovered from an unexpected shutdown

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1053

Additional information about the problem:
BCCode: d1
BCP1: 0000000000000000
BCP2: 0000000000000002
BCP3: 0000000000000000
BCP4: FFFFF8800A246075
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\030512-14586-01.dmp
C:\Users\JR\AppData\Local\Temp\WER-4995011-0.sysdata.xml

The original OS on the system is Windows 7 Ultimate 64-bit with SP1.
Windows 7 came pre-installed on the system.
System and OS installation are 1 year old.
The computer is Dell Inc. laptop XPS 15 (L501x) with Intel(R) Core(TM) i7 CPU Q 840 @ 1.87GHz and 8 GB RAM. I use wireless network card Intel(R) WiFi Link 1000 BGN and I have wired Realtek PCIe GBE Family Controller which I never use.

Please help me solve this problem. Thank you in advance for your help.

Hi and thank you for your help.

Driver for Intel WiFi Link 1000 BGN network card is up to date acc. to Dell Inc. because on http://downloadcenter.intel.com/Deta...&lang=eng#help you can read: (quotation)
"Intel recommends that you obtain and use the software provided via your laptop manufacturer."

Now I have got BSOD as:
Windows has recovered from an unexpected shutdown

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1053

Additional information about the problem:
BCCode: d1
BCP1: 0000000000000000
BCP2: 0000000000000002
BCP3: 0000000000000000
BCP4: FFFFF88004EAA075
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\031112-14617-01.dmp
C:\Users\JR\AppData\Local\Temp\WER-12811800-0.sysdata.xml

What Device Driver Update software would you recommend to buy? There are a few of such software and each one of them costs about $30 but not all of them are good. Besides I use CCleaner and PowerSuite with RegistryBooster and System Tweaker. What is your opinion about them?

What about the other errors and warnings in Event Viewer?

Thank you in advance for your help.

I have installed driver ver. 14.3.0.6 dated 2011-10-27 for Intel WiFi Link 1000 BGN network card from Intel side but Dell OEM Internet side has still driver 13.2.1.5 to download. Then I have run Memtest86+ for 16 passes during 30 hours without any error. Today I started my PC for fourth day without any BSOD so I think the problem is solved.


Thank you panais very much for help with it.