Windows 7: Blue screen BSOD on 3 times a day at random points.

Hi i have a m14x alienware windows 7, Intel core i7, 2630QM CUP 2.00ghz, ram 8gb.

recently over the past few days the computer has randomly been blue screening. This is sometimes when I am using the computer, and sometimes when it has been sitting there idly.

Below is the error report im getting.

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 2057



Additional information about the problem:
BCCode: 3b
BCP1: 00000000C0000005
BCP2: FFFFF800030C7CA4
BCP3: FFFFF8800A2BA740
BCP4: 0000000000000000
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

Files that help describe the problem:
C:\WINDOWS\Minidump\091611-28735-01.dmp
C:\Users\Dom\AppData\Local\Temp\WER-50544-0.sysdata.xml

Read our privacy statement online:
Windows 7 Privacy Statement - Microsoft Windows

If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt

Any help with this problem would be much appreciated. I can also post more details if needed. Thanks

recieved another one, this time it was slightly different

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 2057

Additional information about the problem:
BCCode: 1000007e
BCP1: FFFFFFFFC0000005
BCP2: FFFFF8800FF28942
BCP3: FFFFF8800355B798
BCP4: FFFFF8800355AFF0
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

Files that help describe the problem:
C:\WINDOWS\Minidump\091611-15709-01.dmp
C:\Users\Dom\AppData\Local\Temp\WER-45536-0.sysdata.xml

Read our privacy statement online:
Windows 7 Privacy Statement - Microsoft Windows

If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt