problem when start using cpuminer / cudaminer I got this in the CMD :

cgminer.exe is not recognized as an internal or external command, operable program or batch file

I have downloaded cpuminer and cudaminer to mine LTC with my labtop (core i7, Nvidia GT 525 M)

using www.wemineltc.com  pool 

but when I double click the .bat  file (cmd flash for a sec)  then nothing happen 

can someone  help me please ?

i  have used this tutorial : https://teksyndicate.com/forum/litecoin/guide-mining-nvidia-now-guide-mining-feathercoin/137688
I think that you configured the batch file incorrectly. It seems as if your batch file is beginning with a call to cgminer when either 

A) You don't even have cgminer installed, you didn't mention installing it whatsoever. Download cgminer, and relocate the batch file in the application directory.

B) Your batch file calls cgminer, and it can't find it. Either move the batch file to the cgminer application directory for cgminer, or go in and edit the batch file to call either 'cpuminer' or 'cudaminer' (this should be the first word in the file) depending on which .exe you want to run.