Quote Originally Posted by Leox
thak you stephen for you help, however it still dont work. the exactly message on my monitor is "sync. fuera limite" in english "out of limit"
when i boot from the knoppix cd I write knoppix xvrefresh=60 and it works perfectly, but when i boot from my hard disk I dont have the chance to use the cheat codes at the startup.
You can pass additional parameters at the lilo prompt when you boot but I don't know for sure if the xvrefresh is one of them or if it knoppix specific it can't hurt to try the most it will do is give an error.

Try this when you see the lilo screen when you boot you will see under the red lilo screen a boot: if the option selected to boot in the red lilo screen is linux then just type in linux xvrefresh=60 or if the name is different just use that instead of linux if it gives you an error then you can't pass it if not it should work.

It does seem strange that it won't use the working config from the CD did you change any monitor settings on the HD install?