PC experts required please..help with triples and monitor standby

[museumsteve]

I have so much faith here that I know someone will know the answer :
)
I've just got back into racing so I bought everything new and set it up in the living room before moving to another room. The PC is i9 9900, 2080ti and triple screens. All was good, turn off at night and when I turn on the next time (no matter when it was) all 3 screens would come out of sleep/standby automatically. Now I moved everything and not necessarily used the same screens on the same ports with same connections etc it no long does it. Only one screen comes on when I boot up and I have to manually press the standby button on the other 2 monitors.
I spent hours searching of an answer and the closest I came was from a chap on Mircosoft forums that had similar issue and he worked out it was because the screens were not in the same order as when first installed. The thread just died so I never saw if he found a solution.

Obviously I could probably unistall nvidia stuff and start again but I don't know if there's a stamp in a registry somewhere that will always give me the same issue.

So...who is going to put me out of my misery

 

[Beef36]

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[museumsteve]

I had a similar problem and resolved it by replacing the DisplayPort cable for the recalcitrant monitors.

Thanks for the reply, I'll give it a go

 

[Alex Townsend]

I used tags on my monitor cables to show which port they each belong to on the GPU. This way when I move stuff around they are always plugged back into the same port as before. I got the tags in my MSI motherboard box but sure they're available at any PC store too.

 

[Beef36]

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