PC starts without 6pin pcie connector connected but not when it IS connected to GPU

[KuroiBullen]

So basically what the computer does when i try to start it with the pcie connector plugged in is that the power light turns on but nothing happens, no fans spinning anywhere, hard drive not starting. Only power led comes on.

 

When the 6 pin pcie connector isnt plugged in the computer starts as normal and demands me to connect the pcie connector. I'm suspecting a short, but how would i fix this and at what point might the short be happening?

 

I have tried the gpu in question with multiple psu:s and motherboards.

 

system specs (if it matters):

ASUS GTX 660 2GB (the smallest one)

fujitsu lga775 motherboard

q9400 stock clocks and voltages

500gb hdd

8 gigs of samsung ddr3 1333mhz

300 watt liteon psu

 

also tested with:

asrock p67 extreme6 board and an xfx550 watt psu

acer h61 board and 650 watt psu

asus z170 pro gaming and corsair rmx750w psu

 

(same results with everything)

 

 

[BondiBlue]

Am I correct in assuming that you are connecting the proper cable to the PSU and to the GPU? If the system is totally lifeless when it's connected then it sounds like something on the GPU is shorted. You could look for obvious physical signs of shorting, perhaps by the power connector on the card itself. 

[KuroiBullen]

I am absolutely 110% sure that i am connecting the correct cable. I will try and have a look closer but yesterday there appeared some gunk for the lack of a better word on and next to a little chip on the board. It didnt seem burnt and i cleaned it off with alcohol (attached picture). This stuff wasnt near the power connectors however so i didnt think it could be the culprit. nothing seemed to be wrong next to the pcie connector but i will update you if i see something in closer inspection.

 

Thank you for your reply.

[KuroiBullen]

Alright I just tested the card again without the power connector with the asrock p67 extreme6 and xfx 550 watt and after some time of trying to get a picture of any kind on the screen, i started to smell burning at this point i decided to flip the psu off and luckily no damage seems to be done to it. the card does smell quite bad and a quick touch test revealed that some caps got extremely hot. any idea on why this could be??? taking apart the card now to see if theres damage.

[KuroiBullen]

this is entirely not good is it? this is the reason the adjacent caps were quite hot. i dont know what this part is but its dead im pretty sure... well unless anyone knows what to do from here... R.I.P.

[RAS_3885]

3 hours ago, KuroiBullen said:

this is entirely not good is it? this is the reason the adjacent caps were quite hot. i dont know what this part is but its dead im pretty sure... well unless anyone knows what to do from here... R.I.P.

 

Not good at all. I'd say it's dead.