I´ve tried to run as an administator in Windows XP,Vista etc.

Does this mean you've tried running it in Compatibility Mode for each of these operating systems under Win 10, or did you run it natively within them? Given its age and the specs, it might just be too old to run properly under Win 10, no matter how much you try to tweak it.

One way you could try it if you haven't run it natively is to virtualize a copy of XP on your Win 10 machine, presupposing you have a valid license for the former.

 

Yes,i´ve tried to run it in Compatibility Mode for each of these operating systems under Win 10.I´m really sur the game can run on a Win 10 Computer.On my old Windows 10 64bit Computer that i sold
Nascar 2004 was running without problems!The Videocard was the same.

 

So i´ve tried to run Nascar Thunder 2004 on a Virtual Win XP Computer.If i click the Nascar icon,i can see for just a second,then i get the same Message i get in Win 10.But in this case a minimum of 256MB of free memory requie´red!

 

Did you install Virtual Win XP as part of the Win 7 installation? If so, I'm pretty sure that won't work properly. You'd be better virtualizing the OS using either VirtualBox or VMWare Player. However, bear in mind you need an XP installation DVD and a valid license for that.

 

No,i have installed Win xp in Virtualbox!

 

Okay, good! Let's have a look at the settings, then. You can increase the available video memory used by VirtualBox if you follow these instructions.

 

The memory Problem is fixed.But i get a new message.No DirectX8.1 Videoadapters found.I´ve installed DirectX 8.1!

 

Run dxdiag on the virtual machine and see if this can shed any light on the situation.

 

Icannot upload the dxdiag file.Which information are important for the Problem?

 

Did you follow the actual instructions on the page I linked? It's moreso to test it out, and then we can look at seeing how to get it running properly in the vm.

 

Yes,i did it!tThe System shows DirectX 9.0.I installed 8.1!No peroblems in DirectX Files!The Display:The Driver vBoxDisp.dll is not digitaly signed.3D functionality not available!