Bluescreen: Stop 0x000000F4

[Raptor1]

I was having an occasional bluescreen since March, but they have become more and more frequently up until today when I get them multiple times per day.

Could someone help me with trying to find out what's causing this, and how to fix it?

My information:

OS: Windows 7

I have got the following info + 2 crash dumps from 2 different dates:

Probleemhandtekening:
Gebeurtenisnaam van probleem: BlueScreen
Versie van besturingssysteem: 6.1.7601.2.1.0.256.48
Landinstelling-id: 2067

Aanvullende informatie over dit probleem:
BCCode: f4
BCP1: 0000000000000003
BCP2: FFFFFA8006920060
BCP3: FFFFFA8006920340
BCP4: FFFFF800035E18B0
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

I've added 2 crash dumps as attachments.
The one is from 14 september and the other is from 28 october.

I hope someone can help me, I would be very thankful!

 

[Route44]

You are infected with the backdoor trojan nssm.exe. We strongly suggest going to our excellent Virus & Malware Removal forum and read the Updated Steps sticky and follow the instructions exactly as given. Good luck.

 

[Raptor1]

Thank you !