Cant left click while holding down rightclick

[Fropsie]

I Cant left click while holding down right click, and the same way around. This has been around for quite a while on my pc now,i can click with the mouse like its supposed to but they just wont register,also using my mouse5 buttons that are on the sides wont work while holding down left/right click, and the same way around. Any ways to reset my mouse settings or something? Thanks for the help.

 

[Colif]

is it a generic mouse or use its own software?

I guess its useful in games?

 

[Fropsie]

is it a generic mouse or use its own software?

I guess its useful in games?

It doesent have its own software, and its exactly the opposite in videogames, Cant do cool comboes.
The mouse is : Trust GXT 25