Graphic error's I think

[Tumminn]

The problems I'm experiencing is this:

 

1) When walking around the charecter's will become black like they are coverd in someones shadow

 

2) Sometimes when I walk the charecter stops walking and starts spinning on the spot he stoped and then all of sudden he will teleport in some random direction.

 

3) When I'm accessing the menu, inventory, journal etc. the arrows and some other stuff on the interface starts blinking like crazy.

 

Has this happend to someone else or is it just my computer ?

 

(I'm using a game-editor but I have only used it to do some attribute modafaction and to get more money, don't think it matters)

 

I don't know if I'm supposed to say what my computer specs are but here they are annyway:

 

AMD Athlon 64 X2 Dual

Core Processor 3800+

2.01 GHz

1 GB of RAM

 

and my video card is: MSI NX7600 GT (NVIDIA GeForce 7600 GT)

 

Thank's in advance, and tell me if I forgot to mention something.