looking at the one memory dump, i can see that you are using microsoft generic version of intel's storage drivers and generic version of intel USB drivers. you should install the version for your motherboard:
http://www.gigabyte.com/products/product-page.aspx?pid=4957#driver
if these do not work then you should install the updated versions directly from intel.
https://downloadcenter.intel.com/
what i figure is happended is your system goes along and the intel storage driver hits a bug and starts to read data from the hard drive incorrectly and this causes a driver to get really confused with the bad data. when you forced a memory dump the storage controller was broken because of the bug and it resulted is a corrupted memory dump produced.
I think just updating the intel storgae driver will fix the problem
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looks like the memory dumps were mislabeled. I can read the one labeled (froze)
but it is not a lenovo motherboard.
machine info:
BIOS Version F9
BIOS Release Date 09/18/2015
Manufacturer Gigabyte Technology Co., Ltd.
Product Name Z97X-SLI
Product Z97X-SLI-CF
Processor Version Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
Processor Voltage 8ch - 1.2V
External Clock 100MHz
Max Speed 3800MHz
Current Speed 3400MHz
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well, the memory dump produced when there was not any problem is all messed up.
it is corrupted and could not be read by the debugger.
-you can try and update the BIOS and motherboard drivers if you have not already done so.
(bugs in the storage drivers could have corrupted the memory dump as it was being written to the disk)
-you might want to confirm your windows install is not corrupted
-yoiu might want to run a malwarebytes scan and maybe a rootkit scan
i would also download and run memtest86 to see if your memory is ok.
you might try to set the memory dump type back to a minidump after you update the BIOS and motherboard drivers then try to trigger a new memory dump while the system is working ok. I can see if the minidump has any problems.
i will download the second memory dump (froze) but I expect i will not be able to read it.