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New HD7750: Black screen

Tags:
  • Radeon
  • Graphics
Last response: in Graphics & Displays
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November 22, 2012 10:19:01 PM

As title says, unistalled old videocard, power off, installed the new videocard, black screen. My pc should satisfy all the requirements:

MB: Asrock 945GCM-S http://www.asrock.com/mb/Intel/945GCM-S/
PS: Itek 450

DC OUTPUT: +5v +12v -5v -12v +3.5v +5VSB total
ATX-450ATX: 45A 12A 0.5A 0.8A 26A 2A 450W

Tried also to clear the cmos with no results.
Tried on another pc older than mine but with a ps 500w and black screen.
Tried on another pc much newer than mine (pcie 2.0 and 620W) and worked.
Tried again my old card (4760) and works fine.

So the card is working, there is a problem in my pc, which ?

Thank you for any answer :) 

More about : hd7750 black screen

November 22, 2012 10:46:38 PM

grab this 620W again and connect it with your system and try again.
November 23, 2012 1:45:46 AM

What ? The other computer where i have tested it are not mine :\
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November 23, 2012 1:57:59 AM

rickett said:
As title says, unistalled old videocard, power off, installed the new videocard, black screen. My pc should satisfy all the requirements:

MB: Asrock 945GCM-S http://www.asrock.com/mb/Intel/945GCM-S/
PS: Itek 450

DC OUTPUT: +5v +12v -5v -12v +3.5v +5VSB total
ATX-450ATX: 45A 12A 0.5A 0.8A 26A 2A 450W

Tried also to clear the cmos with no results.
Tried on another pc older than mine but with a ps 500w and black screen.
Tried on another pc much newer than mine (pcie 2.0 and 620W) and worked.
Tried again my old card (4760) and works fine.

So the card is working, there is a problem in my pc, which ?

Thank you for any answer :) 


I would say update your bios, the 7750 gets all it's power from the pcie slot
November 23, 2012 9:29:07 AM

just test you system with a different psu , cant you borrow it ?
November 23, 2012 12:43:19 PM

The 7750 should consume the same as a 4670, so it should be a motherboard problem, but i dont know how to resolve it.
November 24, 2012 6:45:05 PM

bump
!