'Attempted switch from DPC' error after latest major update

I started getting this error and BSOD after the last major update (Anniversary update?). My PC starts fine and is OK for hours, then suddenly falls over. It never did this before the update.

I have updated all my drivers and also run a scan and repair on the registry using the Registry utility in Advanced System Care, but it's still happening.

What else can I do without just rolling back to a restore point (which would presumably just try to update itself again...)

Thanks,

Hi,
Thanks for your reply - I've now uploaded the system info file as per BSOD posting instructions - apologies for not doing that earlier.

I'm surprised you say that about IOBit software - I've used Advanced System Care for years without ever having a problem - and my PC has always been very stable until this last major Windows update...

Because I use my PC for my work I've had to just work on with the problem whilst I've been busy, but since then I've had a succession of additional, different, errors:

KMODE EXCEPTION NOT HANDLED
On one occassion I saw it said on screen that ncis.sys had failed - can I delete this file? - but I haven't seen it sinceDRIVER VERIFICATION DETECTION VIOLATION
This was after I ran the driver verifier

WINDOWS COULDN'T LOAD CORRECTLY
I managed to get Windows to load after re-booting

One thing I have noticed throughout the many BSOD's - it seems to happen most often when I not using the PC - might that be a factor? (I have all my monitors/drives etc on all the time - i.e. I don't use any 'eco'/save power settings that I'm aware of)

thanks,
David