Today i had my Gpu shipped.and before that i had my psu replaced with Corsair TX 750 V2.
I have windows 8
As the Psu is very strong , i opened the Gpu from box and installed it.but strange things like the display is absent ( i mean all black screen ) as output to monitor is from gpu but the o/p from onboard gpu is there at the same time.
but the gpu fan is spinning and the screen is all black.
but i tried many times everything like cables , different psu connectors ,but failed.
but one time i got frustrated and just let the black screen come on, and what i saw was the log in screen of win 8.i thought that its working , but then i shut down , again there was black screen for very long and no display again !
but then i restarted with onboard gpu and found that resolution is changed (as it happens with new gpu) nvidia control panel is detecting gpu at Physx . i tried some games , they were varying in speeds as if for 2 seconds there is no gpu and after 2 seconds if the game is gpu accelerated .
also the system is detecting gpu , but i am not getting any display from gpu ports ( none ports) and at same time onboard gpu is showing display .