Moniter flicks

[jingleharish]

Hi my problem is that moniter flicks during booting, the first part goes fine only during the second part the moniter flicks what may be the problem please help me i have a AMd 1.1GHz Athlon processor and 256 MB RAM

[UnderScore]

It sounds like knoppix is doing the best it can at autodetecting the video hardware (perhaps getting it wrong) & then setting a resolution & refresh rate that is beyond the capabilities of the hardware. Try booting knoppix with some Cheat Codes, such as:
knoppix screen=800x600 xvrefresh=60
knoppix screen=640x480 xvrefresh=60

I hope this helps.
James