Thought I would write down what happened to me today, on the offchance it (or the process I went through) helps anyone.
Turned on my desktop this morning - logged in and had just enough time to see the wallpaper before being greeted by a blue screen with 0x000000C5 on it! I have it set to not automatically reboot, so I had a quick look at it before manually restarting - assuming it was simply a one off glitch of the kind that invariably happens on 5 year old hardware. No driver was mentioned, and I could not recall any common cause for 0xC5.
It booted fine, I logged in again with the intention of looking at the minidump and at roughly the same point I received another identical BSOD.
At this stage my thought process was:
Two identical crashes at roughly the same point in start up - most likely software related
Given it happened after logon both times - probably 3rd party software related.
Based on the above I booted into Safe Mode to retrieve the minidumps, however they weren't there. No big deal, it just meant I would have to do it the hard way.
Looked in EventViewer and the WER entries in MSINFO - prior issues listed but nothing relevant to the morning's crashes.
At this point I decided to try a bit of elimination. I disabled all non-Microsoft services and startups with Autoruns, then rebooted normally. Logged in without issue.
Next I enabled the core 3rd party drivers and services (Graphics/Networking/Sound) and rebooted. Logged in again without issue.
Added just ESET to the above enabled items and rebooted again. Logged in and immediately received a 0xC5 BSOD. Aha!
Based on the above it was a safe guess that either ESET or the networking drivers were at fault. After rebooting into Safe Mode with Networking I located the latest network driver. Rebooted after installation - still received the BSOD.
Despite knowing ESET5 was out, I had not got around to updating from ESET4 yet. So, my next course of action was to remedy that and I am pleased to say that solved the issue.
I should remember to take advantage of free software updates. :lol:
Basic elimination techniques can be very effective.