BSOD while browsing on firefox, especially in combination with Flash

[Uncle P]

Hello,
I've been receiving worryingly many BSOD's on a fairly new computer. A connecting factor seems to be the use of Mozilla Firefox, and through it, Adobe Flash player while viewing YouTube and niconicodouga videos. It might also have to do with Avast, as the problems began only after I moved over to it from Norton. Not immediately, though, so I can't make a clear judgement on that.

Following instructions, here is my DM Log Collector file.

Thank you for your time,
-Uncle.

 

[Boozad]

Welcome to 7F. Could you please start by updating your system specs by following http://www.sevenforums.com/tutorials/180324-system-info-see-your-system-specs.html

1: Your Intel USB 3.0 eXtensible Host Controller driver is being flagged.

fffff880`09b65698  fffff880`0f201be0Unable to load image \SystemRoot\system32\DRIVERS\iusb3xhc.sys, Win32 error 0n2
[COLOR=Red][B]*** WARNING: Unable to verify timestamp for iusb3xhc.sys
*** ERROR: Module load completed but symbols could not be loaded for iusb3xhc.sys[/B][/COLOR]
 iusb3xhc+0x1be0

0: kd> lmvm iusb3xhc
start             end                 module name
fffff880`0f200000 fffff880`0f2c5000   iusb3xhc T (no symbols)           
    Loaded symbol image file: iusb3xhc.sys
    Image path: \SystemRoot\system32\DRIVERS\iusb3xhc.sys
    Image name: iusb3xhc.sys
    Timestamp:        [COLOR=Red][B]Wed Feb 12 11:04:33 2014[/B][/COLOR] (52FB5541)
    CheckSum:         000C82CE
    ImageSize:        000C5000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

:ar: Check for an updated version here.

2: Your nVidia driver has also been flagged.

fffff880`0bd28288  fffff880`0f46bd68Unable to load image \SystemRoot\system32\DRIVERS\nvlddmkm.sys, Win32 error 0n2
[COLOR=Red][B]*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys[/B][/COLOR]
 nvlddmkm+0x217d68

0: kd> lmvm nvlddmkm
start             end                 module name
fffff880`0f254000 fffff880`0fee2000   nvlddmkm T (no symbols)           
    Loaded symbol image file: nvlddmkm.sys
    Image path: \SystemRoot\system32\DRIVERS\nvlddmkm.sys
    Image name: nvlddmkm.sys
    Timestamp:        [COLOR=Red][B]Wed Jul 02 18:42:02 2014[/B][/COLOR] (53B4446A)
    CheckSum:         00C4C7C9
    ImageSize:        00C8E000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

:ar: Download this earlier version from here and follow NVIDIA Drivers - Avoid Problems for the cleanest possible install.

:ar: Please uninstall Google Chrome and use an alternative browser for testing purposes.

 

[Uncle P]

Thank you for your responses. I have updated my system specifications as instructed.

This is embarrassing to ask, but... Intel offers above-mentioned USB drivers for series 7 and 8 chipsets, but if I am reading my hardware specifications correctly, I am running a 9-series chipset (MSI Z97 GAMING 7 (MS-7916)) motherboard. Should I go with one of the offered, or seek elsewhere? In addition, I can't quite find my Nvidia folder at C: root, as suggested by the linked instructions, but rather at user\appdata\local\temp\Nvidia. As a result, being dumb and easily intimidated, I'm unsure of how to proceed. My apologies for the need for all this hand-holding.