Graphicscard Ati firepro v3700 not supported gpu acceleration on premier pro

In addition to what Ann stated, that is a very old card that predates AMD's adoption of OpenCL. As such, the V3700 has absolutely no GPGPU processing support whatsoever. And even if it did support OpenCL, it has only 256 MB of VRAM - far too little VRAM to even enable GPU acceleration at all. Premiere Pro generally requires 4 GB or more VRAM to even run properly.

And if your system is as old as that graphics card (circa 2008), be aware that Windows 11 is around the corner. And Windows 11 will require a much, much newer PC than yours to even install at all. Windows 10 will be placed into "semi-legacy" support status at that time, meaning that there will be at least one more feature update (plus numerous critical security fixes) coming after Fall 2021, and will last until October 14, 2025 when all support for Windows 10 will completely end.

Thus, my suspicions have come true: Microsoft, like Adobe and the rest of the tech industry, have become increasingly elitist about the hardware requirements.

Do not count on Windows to be fully up to date when it comes to device drivers
Go to the vendor site to be sure you have an updated driver for your graphic adapter
ATI Driver https://www.amd.com/en/support

There are also intermittent reports that the newest driver is not always the best driver due to driver bugs or compatibility issues, so you MAY need to try an earlier driver version