The Optiplex 710 supposedly supports Ubuntu 10 and 11, so booting Linux should be possible. May require installing without UEFI, though.
I know some distros have issues with old Intel GPUs, try booting with nomodeset and the other my-graphics-card-doesnt-work kernel parameters, and figure out what driver options you may need from there. You may need to boot a kernel older than Linux 6.3 for some VERY old GPU hardware to work.