HDMI to Thunderbolt Display?
Thunderbolt displays require thunderbolt to work. Add a PCI card or see if it can be upgraded to USB 4 which is the same as Thunderbolt 3. Then the 3 to 2 adapters will work to operate the display.
Sorry there is no other way to make these work. Once you get thunderbolt hardware, windows can work with Apple products.
Essentially, you have a thunderbolt dock with an embedded display and not a display that uses thunderbolt.