Bsod kernel_data_inpage_error

My notebook, running Windows 7 Ultimate 32 bit SP1, always BSOD, but not specified with every minute/hour, it happens when my notebook has been turned on for more than an hour (Example: after turned on for 2 hours or 1 and half an hour.
This error is very disturbing my activity. So I hope for your help.

Spec (my notebook is ASUS A43SA-VX203D):
Processor: Intel Core i5 - 2430M, 2.4 GHz
Memory: 2 GB
HDD 640 GB
Graphic Chip: AMD Radeon HD 6730M

Problem:
BSOD : KERNEL_DATA_INPAGE_ERROR

This is shown by Error Reporting:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: 7a
BCP1: C044D7D8
BCP2: C0000185
BCP3: 3394D860
BCP4: 89AFB9CC
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\031012-16395-01.dmp
C:\Users\User\AppData\Local\Temp\WER-172724-0.sysdata.xml

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These files (in the attachment) are listed in Error Reporting of Windows as files that help describe the problem. If you need specific/more information, you can reply my thread. I need your help.

Also I want to ask: Why can't I run the "perfmon /report" and it always say:
The wait for the report generation tool to finish has timed out.

About the BSOD Dump & System File Collection app (Windows_NT6_BSOD_v3.03_jcgriff2_.exe) is still running, and if it's finished, I'll edit this thread.

This BSOD has already happened more than 5 times, happened every time (such as when playing, browsing, and when idle/when I leave this notebook)

As an information: My notebook is very slow, since I installed many applications
Also: Not only KERNEL_DATA_INPAGE_ERROR, a BSOD with something (I forget the name) contain the word USB has already happened once