Vista won't let me choose my native screen resolution

Its hella weird but my 19" WS monitor is 1440x900 and this is what I set my games too, and my desktop as well, all of a sudden 1440x900 isnt on the slider when you go to change resolution, PLUS now none of my games show this as a possible resoution, what happened? I could play FEAR And Company of Heroes in these resolutions, now I cant..can someone help?

19" WideScreen TFT LCD Monitor 1440x900 720dp

Asus P5N32-E SLI PLUS (1333FSB Ready)

Intel Core2Duo E6420 2.13GHz 4MB L2 Cache 1066Mhz FSB

Overclocked To 3.4GHz (400Mhz x8)

Buffalo FireStix 2GB DDR2-800MHz RAM PC2-6400 @ 4-4-4-12T

4 Hard Drives SATA 1X250GB - 1x300GB - 1x200GB -SATA II 1x160GB - 910GB Total

eVga 7950GT KO SuperClocked 512MB 1600/800MHz

Thermaltake 745 BigWater Liquid Cooling System

(2) UV Cold Cathodes

Windows Vista Ultimate

#463191

Check your monitor driver.

Also, nVidia drivers SUCK on Vista. You can thank nVidia for not supporting Windows Vista.

But chances are, your monitor driver got switched to the default pnp driver.

#463210

thats crazy, i just had same native res problem with 1440x, Vista & nVidia

#463219