Yet nothing helped. I tried something else now: i put the SSD into my desktop and installed via the USB stick. everything is fine, installation complete. when i put the SSD back into the netbook, the computer doesnt start, saying "operating system not found" i guess its the same problem. i try to install all the dell drivers now via desktop and start again. maybe someone has any other idea? i tried to "fix" the boot.ini like they guys told in the thread fernando gave me, but that did not work...