Thief 3 Input Resolution Out Of Range

[TheLimpNinja]

So I have just installed thief 3 from steam and am trying to play it, but when I launch it I just get a blank screen with my monitor saying "Input Resolution Out Of Range". I have read many discussions regarding changing resolutions, however my computer runs games like Assassin's Creed 3 fine without any resolution errors. How do I fix this so that I can play Thief 3.
Note: I am currently using an LG Flatron L1915S monitor which is NOT widescreen or digital.
I have also got an NVIDIA GeForce GTX 650 Ti GPU.
Thanks in advance for any help provided

[Sui]

It doesn't matter what you computer runs or what not. "Input Resolution Out Of Range" means, that whatever resolution is Thief Deadly Shadows rendering, can not be handled by your monitor - most likely, because the resolution is too high.

Anyway, as always - start by installing Sneaky Upgrade - yes, that's what I recommend for people having problems with widescreens, but this fan patch just comes with so many fixes and tweaks, there is no reason not to do it. You install it to:

Steam\steamapps\common\Thief Deadly Shadows

Check if it works, if there is still a problem with resolution being out of range, go to:

Steam\Steamapps\common\Thief Deadly Shadows\save\SaveGames\User Options

And there is going to be SneakyOptions.ini in there. Open it with text editor (obviously, I recommend Notepad++, but a normal one should work as well.

Under [Screen] section you'll find lines:

CustomResWidth=640
CustomResHeight=480
Resolution=2 (or whatever the value is)

Change CustomResWidth and CustomResHeight to whatever your native screen resolution is.
After that change Resolution to 0. Example (1440x900):

CustomResWidth=1440
CustomResHeight=900
Resolution=0

[TheLimpNinja]

Thanks it seems to be working now :-)

[Gaming Since 85']

Thanks Alot that patched really helped alot man :)