Colours Messed Up

[SGT Cloudrunner]

This is the first time I've tried to play GTA IV on my current computer and for some reason, the colours are completely messed up. Everything is a mix of bright reds, yellows, blues, greens, etc. These colours are also inconsistent. Sometimes everything will be predominantly red, other times predominantly blue. The only exceptions are the menus and HUD. The game seems to run smooth and play just fine, the only issue I'm having is the colours. I'm running it on max settings (though I've toyed around with lower settings to no avail). Has anyone else encountered this, and is there a way I may be able to fix it?

Also, I have no mods installed, it's just the base game and I run into the same problem with TBoGT. Haven't tried TLAD but I imagine it would be the same.

My specs are:
i7 4790k
16GB DDR3 1866
GTX 970

Screenshots:
http://i.imgur.com/scOZzMZ.jpg
http://i.imgur.com/eOraKBW.jpg
http://i.imgur.com/M2hqEeC.jpg
http://i.imgur.com/2z2uokX.jpg
http://i.imgur.com/VIxV0Xt.jpg

[AcidSpew]

Wow, huh. What OS do you have? Are the video drivers up to date? Try checking if stereoscopic 3D mode is enabled in Nvidia control panel, and disable if it is (altough, I doubt this is the case, if other games run well).

Have you tried monitoring your GPU/CPU temperature while playing? Are they in normal range? Also, does that colour mess up happen immediately or after playing some time?

[SGT Cloudrunner]

To answer your questions in order
-I'm running Windows 7 SP1 64bit
-My drivers are up to date.
-I checked and Stereoscopic 3D is disabled
-I just loaded it up and monitored my temperatures while doing my best to play some missions and the temperatures certainly weren't bad. My CPU and GPU were peaking at about 50 and 60 respectively.
-And the colour mess up always happens as soon as gameplay begins. The main menu and slideshow loading screen looks fine.

On a side note, not sure if there's any correlation, but GTA IV is the first game to ever give me coil whine. It's very slight, but it's there.

[AcidSpew]

That is weird. I would guess your video card is not compatible with GTA IV, but I found a plenty of youtube videos, where it runs fine on GTX 970. I also searched in internet, but couldn't find anything remotely like your problem.
What are your launch options for GTAIV?
Try setting another compatibility mode for GTA executables.
I would even try installing ENB graphics mod, maybe it could help?

[SGT Cloudrunner]

I actually seem to have solved it with an ENB. Installed one last night and upon loading the game, everything looks proper as long as the ENB is on so I guess it fixed something that was going wrong. I meant to post sooner saying that I had done this but it slipped my mind. I appreciate the help.

[AcidSpew]

That's nice! ENB also makes game a bit more pretty, so that's a bonus. Glad to hear you solved this.

[SGT Cloudrunner]

Yupp, and oddly enough, after installing the same enb on EFLC (and then uninstalling it because of issues with it), EFLC works just fine now. In GTA IV, toggling the enb off results in a return of the messed up colours (as I would expect), but on EFLC, I noticed when I toggled it off that it looked normal. Interesting to say the least, but I'm happy to have everything working well, haha.

[AcidSpew]

Haha, yeah, this is the weirdest issue with GTAIV I have ever seen, even internet search gave no results. ENB fix is also weird, I wonder what did it change for the game to fix the colours. Anyway, cheers and enjoy the game

[SGT Cloudrunner]

Yeah, I couldn't find anything about anyone else having this issue either, but at least it's fixed. I shall now enjoy this as I await GTA V, haha. Thanks.