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Background: I have 3 identical Acer AL1916 (Older 4:3, 1280 x 1024) that are finicky about starting up. I know this because of the start up issues that i have overcome (since 2008) before when using them with my TH2GO digital and now my 660TI card. Each time I eventually got to a point where I could reliably start and use them. Thanks to Nvidia I no longer have to use the TH2GO which I was really happy to retire (along with my GT 460). The monitors require a 57Hz custom resolution to start. Once I get the custom resolution dialed in - I have had this setup work and been really satisfied running in portrait mode w/ bezel adjustments to yield a 3189 x 1280 view. Using this in VC lets me see most of the instrument panel and a portion of the sky. I and am a private pilot (as of 2010) and use the setup extensively for training both for instruments (using Reality XP's 430W) and comms (w/ Pilot Edge.com) and now REX Essentials +OD. The primary plane I use is the Carenado 182Q. I got the 660TI in October and was thrilled with the improvement to the autogen capability (really astounding difference here) and 10-20% improvement to FPS, over my GT460. I got the 3GB version because of the three monitor setup and figured that would be enough because my monitors are 4:3 and relatively low resolution as compared to what is available now. I would like to buy new monitors (3 identical) considering the Dell 2412, or the ASUS PA248Q - but can't afford them with kids in college. The processor is a I7-950, generally run stock. Sometime of OC using ASUS turbo tune to 3.8 Ghz, but not that often - system is stable using Prime95 at this level. Problem: I attempted to fix a computer crash problem that occurred frequently enough - that it was beyond annoying. I thought it maybe related to a timing issue of using the display port adapter and the two (2) DVI ports that I use to drive the triple monitor setup. I read that the HDMI port is closer to the DVI (regarding signal technologies) so I used attempted to use that vs the display port w/adapter ..... This is why I am now so badly in need of HELP! After trying this I am no longer able to sync the monitors to startup. Generally I can get no more than two to start, when I plug in a 3rd. the monitors don't start and I get a floating dialog box that states the monitors are out of input range.. If I reconfigure using a different combination of ports, I only get limited success - I have tried a clean install of the Nvidia drivers using the custom install option - however the card seems smart enough to register the combination of monitors and modes that I have previously attempted. Questions - 1) How do I clean the registry to erase the prior setups, 2). Is there a way to set resolutions in a startup file outside of windows, or in the safe mode? .... Any other ideas?