The dates on your dump files seem a little strange, the most recent I see is 3/3/2014.
In that particular case it appears it may be related to your wireless chipset.
FAILURE_BUCKET_ID: X64_0x9F_3_POWER_DOWN_bcmwl664_IMAGE_pci.sys
Is it possible you can look in device manager and let me know which wireless adapter you're using, I can then direct you to Broadcom's page to obtain the latest driver.