why does the screen flicker horribly when I use a boot disk?

[billywilly]

I'vebought a new DC and it works for original disks but when I put a boot disk in, the screen flickers so bad it's unwatchable. It's a UK machine working on PAL tv's. I've tried 3 tv's with the same result.
Thanks.

[cheekymonkey]

you meant the utopia bootcd flicks constantly or games that you bootup with flicks?? what av lead are you using and what type of tv set do u have...if your set dun support 60hz or ntsc signals...import games will flicker constantly upwards or downwards