Default [Q] LG p350 is bricked ?

Hi all,

I have the LG Optimus ME (LG-P350). I try to backup the current standard ROM from LG/Android(Android 2.2.2) with Clockwork Mod Recovery. After i have give the ok sign to make it, my phone doesn't work anymore.
The lights of phone are flashing till the battery have not enough power anymore. I've already tried to unplug the battery and put it back in it, but that did not work.

How i can go back to normal boot ?

PS: i backup the current ROM because i wanna try the Cyanogenmod.
edit: The KDZ program doesn't work either. I have win 7 64bit.