Heroes V performance on a laptop.

Colleagues, Please help me get Heroes 5 running on my laptop: Samsung P30, 512MB RAM, Intel Pentium M 1.4 MHz. The problem is with the Radeon 9200 graphics card. The disc is a licensed copy. After installation, the game crashes when launched. I downloaded a patch some time ago and played the game without problems for almost a year. Recently, my hard drive failed, and with it, the patch – I don't remember where I downloaded it from.