Hello there,I just tweaked up my system following Nick_N guide for FSX. I have to say that the improvement in quality and FPS was amazing, thanks Nick for posting it!Since then, however, I'm experiencing BSOD after 20 minutes or so in the sim. Error messages vary each time, the last one was 0x100000d1 (0x062e5794, 0x00000002, 0x00000000, 0xba009c0f)Before applying the tweaks everything was running fine, with lower video quality of course.Any ideas on the problem anyone?Actual configuration is:- Core2 E6600- 3x1GB DDR2-800 - Asus P5K mainboard (P35 chipset)- Nvidia GeForce 8800GTS 640MB- 22" LCD monitor running at 1680x1050- 250GB maxtor system HD- HD WD Raptor for sims - 1 partition for FS9 + 1 partition for FSX sp2- WinXP32bit SP3Tanks in advanceStefano

Random error messages usually mean bad RAM. I suggest you run a memory test such as memtest.

Thanks for your help.Just run memtest86+, with 100% tests passed. btw, if everything worked fine before the tweaks, why it should be the problem?Stefano

Hello there,I just tweaked up my system following Nick_N guide for FSX. I have to say that the improvement in quality and FPS was amazing, thanks Nick for posting it!Since then, however, I'm experiencing BSOD after 20 minutes or so in the sim. Error messages vary each time, the last one was 0x100000d1 (0x062e5794, 0x00000002, 0x00000000, 0xba009c0f)Before applying the tweaks everything was running fine, with lower video quality of course.Any ideas on the problem anyone?Actual configuration is:- Core2 E6600- 3x1GB DDR2-800 - Asus P5K mainboard (P35 chipset)- Nvidia GeForce 8800GTS 640MB- 22" LCD monitor running at 1680x1050- 250GB maxtor system HD- HD WD Raptor for sims - 1 partition for FS9 + 1 partition for FSX sp2- WinXP32bit SP3Tanks in advanceStefano

Sounds like to me you might have made an error setting the /3GB switch or it's not set at all on your XP system. I would recheck this fix (not tweak) in Nick's guide first.Best regards,Jim Young

Good point Jim.In fact I've done nothing about a /3GB switch, I surely missed it.Anyway, since yesterday my PC won't start at all :( so maybe I really have a RAM problem too.I have to fix the hardware problem and then I will set the /3GB switch. We'll see what will happen.ThanksStefano

OK, just to let anyone know, it was a RAM problem.After re-running memtest86+ several times, some errors started to occur.1 stick was faulty, so I removed it and now everything works. Now the system has only 2GB of RAM, im planning to return to 4GB, even if XP will not use all them. I'll then thest the /3GB switch.Thanks everyoneStefano