Cannot start on ThinkPad SL400

我使用的是ThinkPad SL400，当我使用刷写好bootcd的u盘(0.4.15-dev-2776-g413f0b)启动时，电脑在加载好bootloader黑屏无反应，CPU持续运行，而当我更换同一版本的livecd后，进入了系统加载页面，屏幕上的加载进度条卡住，但屏幕底部的条持续变换

Google translate:

I use ThinkPad sl400. When I start up with the U disk (0.4.15-dev-2776-g413f0b) of bootcd, the computer has no response when the bootloader is loaded, and the CPU keeps running. When I replace the same version of livecd, I enter the system loading page, and the loading progress bar on the screen gets stuck, but the bar at the bottom of the screen keeps changing