Pls i need help

[Saane]

I bought a new gpu Asus gtx 750 ti which at start worked perfectly with a 6pin to sata connector but then after a few days it would just during gameplay it would just start showing a screen saying no input display and when i restarted my pc after 2-3hrs it would start working again but it became even worse yesterday i was playing fortnite when suddenly my pc froze and the screen glitched out i tried to restart  my pc but no luck and then i waited till today but it still not working.It works perfectlyfine in safe mode and also when i delete its drivers but when i install its drivers it just reaches the windows logo and then a black screen appears and sometimes the same no display screen appears
My specs are
Core i5 3330
Asus gtx 750 ti oc edition
Hp compaq mt 6005
8 gb ddr3 ram
500gb hdd
I rlly dont know about the motherboard  all i know is that its the default  mobo that comes with the hp compaq mt 6005
And also the pc works perfectly fine with the integrated  graphics it only stops when i install the gpu

[boggy77]

you psu might not be strong enough

[Saane]

I was thinking the same thing but it wont get to the log in screen while i used to use it till 5-6 hrs without any problems

[LjjlijJ]

new as in brand new? ?

it's been a long time since 700 series were discontinued. if it was labelled "brand new" i doubt it actually is. not impossible, but, just, like... new? really?

 

if you bought it 2nd hand then i wouldn't be surprised if there's something wrong with the card itself.

[Bombastinator]

Is there such a thing as a new 750ti?  That’s an old card.  Recently purchased used perhaps.