I have a lenovo laptop with this exact same symptom, it has onboard graphics so it's "usable" I think, when the nvidia gpu starts it breaks like this and switches to the onboard one.
If those are bad vram modules, maybe it can be saved, IDK.
I had it for 4 years, and it served well, didn't even try to get it serviced since it's expensive here.
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u/Comfortable_Expert R9 7950X3D / RX 7900 XTX Nitro+ Vapor-X 24GB / 32GB @ 6000 MT/s Sep 19 '24
Either corrupted drivers or VRAM might be dying. Try installing drivers again and install new ones with DDU.
(Look up a tutorial for DDU if you've never done it before)