BSOD occuring at random moments, getting more frequent


i got several Bluescreens during the past two month. The first two BSOD's were 1 month apart but the last 3 were only 1 day apart :/
They seem to appear at random moments (during a Skypecall, while browsing the web, while in Sleep mode etc.). I cant remember getting one while gaming.
I tried to install windbg from windows sdk to analyse the dump files but the installion always crashes at the start.

Thats why i came here. I hope someone can help me to find the cause of this BSOD.
I attached all the requested files from W7F, CPU-Z and RAMMon.

PS: This is the information i got after the reboot following the last BSOD last night.

Problemereignisname: BlueScreen
Betriebsystemversion: 6.1.7601.
Gebietsschema-ID: 1031

Zusatzinformationen zum Problem:
BCCode: 9f
BCP1: 0000000000000003
BCP2: FFFFFA800AC11060
BCP3: FFFFF80000BA2748
BCP4: FFFFFA800C09E920
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Dateien, die bei der Beschreibung des Problems hilfreich sind:

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Well-Known Member
Seems like the Eumex driver is the cause of the BSoDs, update it:

Eumex 800 - Remote NDIS based Device

fffff880`07189000 fffff880`07193000 usb8023x Tue Feb 12 05:12:06 2013 (5119C116)

Theese drivers also needs to be updated:

Intel(R) Desktop/Workstation/Server Express Chipset SATA AHCI Controller
fffff880`01003000 fffff880`0139d000 iaStor Tue Apr 26 20:06:18 2011 (4DB7099A)

Realtek PCIe GBE Family Controller
fffff880`04800000 fffff880`04885000 Rt64win7 Fri Jun 10 08:33:15 2011 (4DF1BAAB)

ASMedia XHCI Controller
fffff880`04e21000 fffff880`04e86000 asmtxhci Thu Jun 02 04:27:46 2011 (4DE6F522)
fffff880`0711b000 fffff880`0713f000 asmthub3 Thu Jun 02 04:27:58 2011 (4DE6F52E)

Realtek High Definition Audio
fffff880`06e57000 fffff880`0711ac80 RTKVHD64 Tue Jun 28 13:09:04 2011 (4E09B650)

XBox USB wireless controller
fffff880`07168000 fffff880`0717a100 xusb21 Fri Aug 14 00:10:17 2009 (4A848F49)

I also recommend that you replace Avira with Microsoft Security Essentials.

Thank you for the quick answer. I will update them and hope this will solve the BSOD issue.

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