

If there was really any demand more DRAM would be being produced.
The reality is most datacentre companies have warehouses full of DRAM and GPUs waiting for datacentres to be built. By the time they will be built, the GPUs they have stashed will be obsolete.
PC sales - and PCs use a lot more DRAM than phones - are falling off a cliff.
So there is no real future demand, that’s why no ones building chip fabs.



It could be a hardware issue. I’ve found that if the screen drivers fail it usually switches to a text console or reboots into one. Assuming you have a laptop, does wiggling the screen make any difference. If its a desktop, try wiggling the power connector or video cable (both ends) and along the cables, sometimes stress can break the wires in the cables if they go around a bend.