This is the dota speed guide but still not working.
FPS: 15-20.
AMD Athlon 2500+ 1.8 GHz CPU
3 GB RAM
nVidia GeForce FX5200 128 MB video card
Acer x191W widescreen display
Windows XP
LOL, my old computer was the same (besides RAM). Your computer is a piece of history

Why your fps is that low?
- shitty CPU (processor)
- shitty GPU (graphics card)
Your 3GB RAM is useless there and won't give you anything with such great CPU and GPU.
• Solve: buy new pc or laptop.
• Why: replacing some parts of your current PC would be unprofitable.