I have Ubuntu 25.10 running just fine on a 13 year old AMD FX-8350 on a Samsung SSD, 32GB of memory, a WiFi network adapter and a low-end video card -- all of which Ubuntu 25.10 recognized at setup time and installed flawlessly.
I've run every version of Ubuntu since 14.04 on it with zero issues, and even upgraded the WiFi Network Adapter and SSD several times w/o issue.
Let me suggest the following:
1. Boot your computer and get into the hardware settings by pressing DEL or F2 during bootup.
2. Set your system back to its default settings.
3. Try re-installing Ubuntu again. Preferably with 24.04LTS.
Bkmk
AMD FX-8350 with 8 cores, 8 threads, and a 4 GHz base frequency. It was launched in 2012 and supports DDR3 memory. Top tier in its day. Thank God for competition.
nobody else knows either, but i managed to get it all working, just a pain in the ass