fullscreen mode not working

[sloppymuffin]

i recently bought a second gtx 970 and ever since i haven't been able to play games in full screen mode. i get a TDR error when i try to run 3dmark in fullscreen mode, i get a kernal drive error when running furmark in fullscreen mode, fallout 3 has a horrible strobe light effect like every other frame is just black, cs:go crashes on the start up, war thunder crashes on startup, hand of fate, sactum 2 and killing floor 2 all play fine. everything plays fine in windowed mode

system:
i7 3770k
asrock z77 extreme 4 mobo
msi gtx 970 gaming 4g
msi gtx 970 gaming 4g LE
32gb gskill ares ram 1600mhz
seasonic platinum 760watt psu
samsung 840 ssd
wd black 1tb
lg 2560x1080 ultra wide monitor

i tried updating to the latest drivers, that didn't work. then i tried reverting to stable drivers that still didnt work. i am currently on driver version 347.88.
i also tried switching the card around, that didn't work
both cards run perfectly on their own

 

[sloppymuffin]

solved i change the TDR delay to 30 and then i was getting a red flickering affect so i adjusted the sli bridge until it stopped. the cards are 2 different heights and i have a hard sli bridge so it sits on a little bit of a angle.

 

[bigpinkdragon286]

My understanding of NVidia SLI setups is that the bridge connector can be extremely finicky. Check that first.

On another note, have you run the new card by itself to ensure it works? If it checks out fine on it's own, you might try swapping the placement of the cards in the system in case the settings of one of the cards are more compatible with both than the other. I would assume that both cards are going to clock themselves to match, but you never know. You can also try down-clocking the faster card to match the other, perhaps through software such as MSI's Afterburner.

Edit: glad you solved it. Sorry, was being poky and you fixed it before I got a response typed.