Need advice on replacement computer
I have a 12th Gen Intel(R) Core(TM) i7-12700KF with NVIDIA GeForce RTX 3070 (8 GB) and 16.0GB of RAM. However I believe the GPU is dying because it keeps crashing the monitors daily while even playing fairly old games like Fallout 4 and FFXIV and I have to reboot now like 3-4 times a day. It wasn't always like this but the problem just keeps getting worse and worse.
I need a new replacement computer, one that's reliable, can run two 4k monitors at once and can play Baldur's Gate 3 on a very high setting, smoothly. However I will need to mail-order this computer because I live on an island with no Best Buy or equivalents, any recommendation? I'd want a complete desktop, not one with a placeholder parts that require additional assembly. Also the ability to easily open a side door for additional cooling would be handy.