Screen going on black with 660 Ti shortly after boot into windows

[Sceritz]

AMD FX-8320 Vishera 3.5GHz 8-Core
16 GB's DDR3 RAM
Coolmax 700 Watt ATX PSU Bronze Certified
2x Nvidia GTX 660 ti OC
GIGABYTE GA-970A-DS3 AM3+ AMD Motherboard
SanDisk 128 GB SDD (used for OS, and programs I want to launch quickly)
WD 1.5 TB (For everything else)
Windows 7 Ultimate

Exactly as the title says. The monitor, plugged in in the DVI-I slot goes out just a short few moments after logging into windows, stops receiving the signal and goes to standby (as if I unplugged it). The cards are fine. I know because I have two and tried both (I know I just recently found that my Mobo isn't SLI compatible but I plan to switch that out after I fix this issue).

I'm on the computer in question right now, in safe mode. I get no issues. My monitors (I have two different ones I've tried) both use VGA and DVI, and both of them are over 5 years old (around 2007 ish). I think I read here that HDMI might work but I don't have HDMI on these monitors. I also don't have onboard video so that other fix that seems to have worked for many, doesn't work for me. (Trying to find a fix that doesn't require me getting a brand new monitor right now).

http://www.tomshardware.com/answers/id-1651132/black-screen-installing-latest-driver-asus-nvidia-geforce-gtx-660-windows.html?xtor=EREC-8889

I've tried rolling to the 314.22 drivers. Same issue. I've used 3dguru's driver remover done a clean deleted the drivers, done a clean install to the 314.22. Same issue. I'm headed to work now and going to pick up an HDMI to DVI cable so that I'm not plugging into the DVI slot in the video card at all and pray that works. If it doesn't I'm literally lost. This is clearly some sort of software issue dealing with the drivers/the signal and perhaps the age/signalling method of the older monitors. It just doesn't make any sense to me that plugged into the device in safe mode it works, but actually using the drivers in normal mode it cuts off. Any help would be greatly appreciated, I've literally lost hours I should've been sleep for work, over this.

Thank you.

 

[Sceritz]

Update. I used the HDMI to DVI. Same issue. I also took the second 660 out. Same issue. About to see if there are any BIOS updates for my BIOS, and reset to default settings. If that doesn't work then I will try using different 6 pin PCIe connectors.

 

[Sceritz]

Another update. I've switched the 660 Ti's and the issue persists. I highly doubt they are both bad. I've updated the bios. I've updated the drivers to the latest. I've tried both PCIe slots. I've changed the PCIe power cables. Nothing. This is baffling. It could POSSIBLY be the PSU, but I doubt it. It was running fine with the old card before it went out, it went fine with my temp backup (GTX 430), and there's no reason it shouldn't work with either of these 660 tis.

I'm starting to think the card just doesn't want to work with DVI with these monitors. Luckily I caught a good deal on an acer that should be coming in the mail. on Thursday.

Guys if you have any ideas; anything I haven't tried yet, please let me know.