2.6.1 kernel won't boot

Hi all, I'm trying to build the 2.6.1 kernel for my SuSE 9.0 laptop. When trying to boot the kernel from lilo the screen just goes blank and the whole machine locks up. Only a hard reboot can free it up. I then have to go back to my original kernel (which obviously boots fine). Anyone any ideas? Sorry if this sounds a bit vauge. Is there any more info I could provide? Thanks.