I recently had a PSU falure, and the backup unit i replaced it with doesnt have enough power to run my xp processor. therefore i had to put in an old Duron 900Mhz processor. My system specs now are: 900Mhz Duron, 256Mb GeForce 5600, 512Mb RAM, Windows XP Sp2. Now, when i start horizons i get a blank screen, with the only activity being slow consumption of ram. when i look at the task manager, the initial ram usage after starting horizons is 100Mb, which seems rather low to me. it then increases at a rate of about 10Mb/Min. Currently i am running the Omega drivers, but i have tried both omega, and official nvidia drivers, and neither fixes the problem.