Solved! Install SAPPHIRE HD 7970 on DELL XPS 8700

Alphapoint · Feb 28, 2017

Hallo
I need help Please
i have a xps 8700 (working fine With GTX 650 TI )
I try to install a sapphire HD 7970 Graphics card.
i get power and fans running But i have Black Screen!! (No Peep).
after around 20 Sec , the Computer Restart once and still nothing Black screen!!

*i have Thermaltake toughpower XT 775w power supply

I try the Following :
1) i put back my old Graphics card and uninstall all the old drivers.
2) i login to the BIOS and set Secure Boot to off.
3) i change boot from UEFI to Legacy .
4) i put the HD 7970 back and start the computer .
((( AGAIN NOTHING !!!))) ... Black screen and one time restart after 10 to 20 Sec !!

My BIOS Ver. is A11 (Latest i think)
Windows 10 64bit
CPU intel i7
RAM 12 G

Any Help will be appreciated

Thank you
Ala

elbert · Feb 28, 2017

Try resetting the bios to default by pulling the motherbord battery for 5 minutes. Then test the card and also if it has the dual bios try pushing the button to reset the card. Check other video outs on the card. If that doesn't work test the card in another working system. Could be a dead GPU.

Alphapoint · Mar 1, 2017

Hallo
i think i already tried to Reset the BIOS, and it Start again (Secure Boot) and (UEFI) and still nothing work !!

about trying the Card on another working system, the person who gave it to me show me that its working on his PC .

i really do`t know whats wrong

The Paladin · Mar 1, 2017

well I would suggest to swap out your power supply. it is a dell, and only handles 385w on the 12v rail and only 185w on the 3 and 5v rails.
see if it is the PSU or not that took a hit.

elbert · Mar 1, 2017

Alphapoint :

Any chance the person that gave you the card would let you test with his PSU and monitor? Quick way to find out if its PSU, monitor, or motherboard issue. Unfortuanalty you have run into an issue that requries testing to know whats wrong.

Alphapoint · Mar 1, 2017

But i have a Good PSU (Thermaltake toughpower XT 775w)
that person live Very far from me
am worry if my BIOS A11 is Crazy , because i know that the XPS 8700 had issues with some graphics cards like GTX 970 before at A08 and so on ,and the problems solved when they released the BIOS A10 !

so is it possible that the A11 go crazy again , and is it possible that i Downgrade my BIOS from A11 to A10 ?!!!!

Thank

elbert · Mar 1, 2017

I cant guess at that but the HD 7970 can be diffecult even with the best of hardware. Could be a iffy PCIE power cable or a difficult GPU. Could be the reason the guy gave you the GPU. You may try a few times and get it to work. Then have to leave it on to keep it working.

Alphapoint · Mar 4, 2017

Hallo everyone

I think the Problem is from DELL XPS 8700 , it did not work on this PC , i give it to a person i know and it work on his computer directly with no problem,

its only Dell the stupids

Thank you all for trying to help

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Solved! Install SAPPHIRE HD 7970 on DELL XPS 8700

Alphapoint

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The Paladin

elbert

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Alphapoint

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The Paladin

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elbert

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Alphapoint

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elbert

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Alphapoint

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