Blue Screen twice

Got this Blue Screen twice this day. Can anyone help me with it?

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: 19
BCP1: 00000003
BCP2: A3A520C8
BCP3: A3A520C8
BCP4: A7CD50C8
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\051918-10608-01.dmp
C:\Users\Samwon\AppData\Local\Temp\WER-36535-0.sysdata.xml

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C:\Windows\system32\en-US\erofflps.txt

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: 18
BCP1: 00000000
BCP2: 85BBF220
BCP3: 00000002
BCP4: FFFFFFFF
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\051918-11934-01.dmp
C:\Users\Samwon\AppData\Local\Temp\WER-31231-0.sysdata.xml

Read our privacy statement online:
Windows 7 Privacy Statement

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