[opensuse-factory] TW on Thinkpad R51 - how?

Hi everyone, I tried to install TW (snapshot 20161102) on one of my old laptops, an IBM Thinkpad R51. It has a Intel PentiumM processor, 32bit, 1 core, and 2 GiB RAM. When booting from the DVD, I can see the EDD check, then the screen becomes black and the laptop reboots. I tried several parameters, last combination was "edd=off nosmp nolapic noacpi nomodeset noefi" - but still rebooting. Some hints how I can get my old R51 to run Tumbleweed anyone? BTW, the laptop hasn't been touched for more than 3 years now and has a working installation of openSUSE 12.3 on it :). I just want to update... Thanks in advance! Werner --