Irql_not_less_or_equal Windows 7

I've been getting the irql error at random times lately in no apparent application, series of events, or driver updates/uninstalls. It suddenly started happening about 3 weeks ago and since I've had 5 or so crashes I did a driver verifier test and the newest 2 dumps are the verifier ones.I have done memtests for hours with no error and my cpu is watercooled so no overheating.I looked at the dumps and from what I can make out there is some sort of error with ntoskrnl.sys. I am prepared to do a full reinstall from scratch but I really would like to avoid that. I have included all the minidumps from the history of the computer, the memory managment bsod was a fluke I believe, only happened once with quite a while between the irql problem

snapman.sys... Acronis snapshot program. Does this sound familiar? It is sited in the minidumps as an issue

yes I have aconis (a backup program, snapman is for try and decide feature) but would that be a cause, that was only in one dump right?