Theoretically, SH1 changes automatically your screen res to 640x480 when it starts...is that your problem? Your laptop crashes and does not allow SH1 to run the screen at 640x480? Some laptops have in the bios an option to allow extended screen in certain res modes (F.e. old Packard Bells), for others you should determined which graphics card you have and search drivers for them. If that fails, I'm afraid DOSBOX is your only option.