Random Error 0x000000D1

Dear all, please can someone help to find out what causes a Blue Screen of Death on my PC on Windows 7 happening quite often (a couple of times a day). It did happen before, but it was only occasional. The problem has become more severe after I installed a driver for a Canon printer (both software and hardware on the printer seem to work alright). I am attaching a .ZIP (as instructed), and the error message generated after the last crash.
Many thanks in advance

This appears on BSOD:
DRIVER_IRQL_NO_LESS_OR_EQUAL...
Stop:0x000000D1 (...)
ndis.sys - Address FFFFFF880014BE16B base at FFFFF880014B5000, Datestamp 5034f6b2

The 0xD1 BSOD was of March, but the recent BSOD is stop 0x124, which is supposed to be hardware issue.

Code:

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*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
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WHEA_UNCORRECTABLE_ERROR (124)
A fatal hardware error has occurred. Parameter 1 identifies the type of error
source that reported the error. Parameter 2 holds the address of the
WHEA_ERROR_RECORD structure that describes the error conditon.
Arguments:
Arg1: 0000000000000000, Machine Check Exception
Arg2: fffffa8009532748, Address of the WHEA_ERROR_RECORD structure.
Arg3: 0000000000000000, High order 32-bits of the MCi_STATUS value.
Arg4: 0000000000000000, Low order 32-bits of the MCi_STATUS value.

Follow the guide: Stop 0x124 - what it means and what to try