Several reoccuring BSODs

This happened on my Win7 Home 64 [Full Release]:
It all started with a BSOD connected to my new Creative SoundBlaster Play (USB soundcard).

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: 50
BCP1: FFFFFA800941300C
BCP2: 0000000000000000
BCP3: FFFFF880097CB98A
BCP4: 0000000000000000
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

I traced the problem down to AVG blocking the drivers for the card and after removing AVG, the problem was gone for around two weeks.

Then I recieved another BSOD.
I don't have the info on it apart from it being a BCCode: d1.
I thought it was a Daemon Tools problem, so I uninstalled it, but then I got another BSOD and this time I failed to check the additional info, so I have nothing on it.

I decided to run verifier and when I rebooted for it to take effect it would BSOD right after the windows logo shows up. And it's one of those fast bsods, that you only get a slight glimpse of (split second).

So now my question is: what can I do? (Tried windows start-up fix [or w/e the name is] once, but it ran for 20 or so minutes and did not find any solutions/fixes)

I have to mention that I currently am on my Win 7 Home 32 that is installed on the same machine, as this somehow might be relevant.

Also, as you can see, I am unable to post any dump files, as I was lazy enough not to run anything after 'fixing' the first bsod.

Cheers,
trickje

Without the DMP files this is all we can tell you


Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM).
Another common cause is the installation of a faulty system service.
Antivirus software can also trigger this error, as can a corrupted NTFS volume.

Sooo, I managed to get my 64 working (it used to BSOD right after the windows logo popped up). And I keep getting those BSOD messages:

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: d1
BCP1: FFFFFA800893300C
BCP2: 0000000000000002
BCP3: 0000000000000000
BCP4: FFFFF880069CE98A
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1


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: 50
BCP1: FFFFFA8007FA800C
BCP2: 0000000000000000
BCP3: FFFFF88008B6998A
BCP4: 0000000000000000
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

And I attached the System Health Report and BSOD Dump files.

Hope this helps,
trickje

helloo...i really hope that maybe you could help me because it's frustrating getting the blue screen once every few days, and not having any idea what is causing this.
attached the dmp files
thanks