Windowed mode not supported on this adapter

[halloxx]

Hey guys i really need help, i wanted to get more fps so i installed the simple borderless skyrim but everytime i enter windowed mode this message appears failed to initialize renderer: adapter doesn't support windowed mode. like all windowed mode resolutions is the same.

I have the latest drivers.

 

Nvidia Geforce 9400 Gt i know its old.. buy me a new one

directx 11

Windows 7 64.bits

Intel core 2 quad cpu

 

 

4096 MB of Ram