Windows 7 Help please, BSOD randomly, files requested is in OP.

Hi,
out of the three dump files you sent two are like the one above and the other was a Bugcheck 7F. They all mentioned cmudaxp.sys which relates to your ASUS Xonar DG Audio Device. We also have to consider the Bugchecks. Two are D1 which is mainly driver related but Bugcheck 7F can mean hardware is failing especially memory:
Bugcheck D1

Cause
A driver tried to access an address that is pageable (or that is completely invalid) while the IRQL was too high.

Click to expand...

ref:
Link Removed

Bugcheck 7F

Cause
Bug check 0x7F typically occurs after you install a faulty or mismatched hardware (especially memory) or if installed hardware fails.

Click to expand...

ref:
Link Removed

It's also my opinion that this could be down to an old Bios and indeed the above link does specify (Troubleshooting section) that if recent changes have been made to consider updating the Bios

BiosVersion = F8
BiosReleaseDate = 02/21/2012
BaseBoardManufacturer = Gigabyte Technology Co., Ltd.
BaseBoardProduct = Z77-D3H

Unfortunately I don't know which 'revision' or version of the above motherboard you have. There are 3 revisions, 1.0, 1.1 and 1.2. You will find your revision number printed on the motherboard itself. The download page is here but as I mentioned do check which revision you are: (you can see the links to other revisions alongside the motherboard name)
http://www.gigabyte.com/products/product-page.aspx?pid=4140#bios

If your overclocking then of course this may have some impact

It could be that the driver cmudaxp.sys is simply corrupt and a removal and then re-install of said driver may fix things but if it doesn't then you have my advice to think about above.:
cmudaxp.sys Mon Jul 22 02:24:04 2013: ASUS Xonar DG Audio Interface driver
http://www.asus.com/uk/Sound_Cards_and_DigitaltoAnalog_Converters/Xonar_DG/HelpDesk_Download/

You do have some drivers which are out of date:

EtronHub3.sys Fri Jul 20 08:15:52 2012: Etron USB 3.0 Extensible Hub Driver. A 2013 version is available via the support page:
http://www.gigabyte.com/products/product-page.aspx?pid=4140#driver

iusb3hcs.sys Mon May 21 08:23:42 2012: Intel(R) USB 3.0 Host Controller Switch Driver later version on support page:
http://www.gigabyte.com/products/product-page.aspx?pid=4140#driver

LMIRfsDriver.sys Mon Jul 14 17:26:56 2008: RemotelyAnywhere Mirror Miniport Driver or LogMeIn Mirror Miniport Driver. Please check for update:
https://secure.logmein.com/

aswRdr2.sys Thu Jun 26 12:33:28 2014: Avast AV known on occasion to cause the odd issue or two consider uninstalling just as a test.

If after making the above changes you still get the bsod then you need to test your RAM.
Windows does have it's own memory testing app but it can often miss errors and the best app for the job is Memtest86. The latest version of which can be found here:
http://www.memtest.org/

To run Memtest86 you need to either burn a copy of it to disk or use a USB stick. If you look down the page you'll eventually find the latest version and it's associated downloads. If your burning to disk choose the pre-compiled iso zip. If your using a USB method then the corresponding download is the auto installer for a USB stick.
Once you have Memtest86 on the media you selected you'll then need to enter your bios and change the boot order so that the machine will boot from either the disk or stick you have Memtest86 on.
Run the test for at least 12hrs if possible unless it becomes clear that there is a issue. If there is a problem with the RAM you'll see the errors pop up in red so you can't miss them.

Post any new dump files.