its weird that its only a blackscreen but you can still see the compass. could the ram be the reason why im always having problems with the speed of the characters movement
RAM should only be an issue when you've been playing for a while, or have a browser open with multiple tabs... Or Chrome.
Generally though, the only noticeable issue for that, is the game lagging a bit and/or eventually just crashing because there's not enough RAM available any more.
However, IIRC motherboards for that processor only take DDR2 RAM, which itself is problematic due to the speeds of DDR2 compared to DDR3 and DDR4.
As for this question...
is there a way to do that with out buying anything.
Your only real options outside of reducing extraneous RAM usage from other programs, is to pay money. Either for second-hand basically obsolete hardware, or newer, better hardware.
You can get a decent system for around $500/£500 that would be able to more than handle this game, and only have issues with anything that's based on real-time 3D rendering for images.