Welcome to the 10forums.
I'm very sorry for the delay, there aren't many people in this section and I am self quite busy.
Your network driver has been flagged in the crashes until 28th.
I suggest to check Lenovo for driver updates for the network driver.
*** WARNING: Unable to verify timestamp for bcmwl63a.sys
*** ERROR: Module load completed but symbols could not be loaded for bcmwl63a.sys
3: kd> lmvm bcmwl63a
start end module name
fffff801`fe940000 fffff801`ff667000 bcmwl63a T (no symbols)
Loaded symbol image file: bcmwl63a.sys
Image path: \SystemRoot\system32\DRIVERS\bcmwl63a.sys
Image name: bcmwl63a.sys
Timestamp: Tue Aug 25 09:17:57 2015 (55DC16A5)
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4