No BSOD Just a black Screen and an Event ID 41

Hi

Just lately I've been getting a problem which when I look in the Event Viewer turns out to have an Event ID 41 and Locale ID 1033 attached to it. Up to now my PC has been working perfectly for many months. I don't overclock and when I checked temps (using Aida64), I found one temp at 44 degrees (the GPU diode) and the next nearest was 35 degrees so I don't think there's a problem with overheating. It happened yesterday morning at boot up plus another twice. It also happened today at just after 3pm. It can happen any time of day and curiously I've never been using or even looking at my monitor when it happens!

When it dies it only seems to shut down the video system since the PC doesn't run down and switch off; my husband can still access my PC on the network. I don't think its anything to do with the monitors (2 x Iiyama E2407HDS) and I'm pretty doubtful of it being the Graphics card (an Nvidia GTX760). I updated the driver only last night to the very latest for my video card. As far as I'm aware the only other thing it could be is the mobo (a Gigabyte GA-Z97P-D3) (SouthBridge chip?) but how the hell do I check that out other than replacing it. It could equally be the timing of signals to the video card. I suppose realistically it could be almost anything associated with the video system.

So I'm seeking help to get this sorted although I have a sneeking feeling its something to do with hardware. Just a first step forward would be good, anything more would be a bonus. So any help anyone may be willing to offer would be most appreciated. I'm sure that more info will be needed so please, ask away and I'll do my best to provide any info needed.

Tracey

PS I've also just completed a virus scan and malware scan of my C: and D: drives using Avast Antivirus and Malwarebytes respectively but they're all clear.

TRACEY-(2019-08-15_18-20-36).zip