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7950 drivers installed but wont post.

Tags:
  • GPUs
  • Video Driver
  • Graphics
Last response: in Graphics & Displays
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July 4, 2014 2:51:36 AM

Just got a second hand sapphire 7950 3gb gddr5 dual x, deleted old drivers, pulled out my old card, put in new card and connected all the power. booted up pc using onboard graphics, installed the new catalyst control centre software and correct driver, windows can see 7900 series card in device manager under display adaptors but when i turned the pc off and switched from onboard to pci i just get a black screen and my asrock motherboard beeps 5 times. Ive tried several things including resetting my mobo bios and switching the gpus bios from 1 to 2. nothing seems to help. Any help will be greatly appreciated. (i do realise the card may be fualty)

More about : 7950 drivers installed wont post

July 4, 2014 2:58:44 AM

On a modern board it should basically default to the discrete card and no need to do anything in BIOS which if done should be set at either PEG or PCI Express (not just PCI). Monitor has to be connected to the card and card has to have power from the PSU to display.
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July 4, 2014 3:00:12 AM

computern said:
Just got a second hand sapphire 7950 3gb gddr5 dual x, deleted old drivers, pulled out my old card, put in new card and connected all the power. booted up pc using onboard graphics, installed the new catalyst control centre software and correct driver, windows can see 7900 series card in device manager under display adaptors but when i turned the pc off and switched from onboard to pci i just get a black screen and my asrock motherboard beeps 5 times. Ive tried several things including resetting my mobo bios and switching the gpus bios from 1 to 2. nothing seems to help. Any help will be greatly appreciated. (i do realise the card may be fualty)

What power supply are you using? Does it have the 6+2 PCIe power cables on it or are you using some kind of adapter from a molex cable? Also, look at the motherboard after you press the power button. Most boards have LEDs near the PCIe slots. Does an LED turn on after the PC turns on?
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July 4, 2014 3:02:45 AM

My build worked fine before this, just upgrading the gpu. If i have (in the bios) it set to pci-express it does go to the gpu but thats when i get the 5 beeps and a black screen, so i can actually access my pc i switch it to onboard.
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July 4, 2014 3:04:45 AM

Im using a somewhat old Raidmax 500watt that came install with my somewhat old raidmax hurrican case. im using 1pci 6 pin and 1 molex adapater(2x molex to 1pci 6pin).
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July 4, 2014 3:05:55 AM

Get this Raidmax out of your computer, pour the gasoline over it, burn it and then hammer just to be sure noone takes it home. This is the worst possible PSU you can have, a fire hazard even! Get a better PSU asap!
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July 4, 2014 3:06:49 AM

btw when i say i get 5 beeps and a black screen all the fans are spinning like they normally do and the case l.e.ds all light up like normal
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July 4, 2014 3:09:49 AM

computern said:
Im using a somewhat old Raidmax 500watt that came install with my somewhat old raidmax hurrican case. im using 1pci 6 pin and 1 molex adapater(2x molex to 1pci 6pin).

It could be that a) the card is bad or b) the molex to 6 pin adapter is bad or loose. Did you try switching it to a different pair of molex plugs? Also, make sure they are on the same wire, don't use two molex plugs from two different wires - make sure they share the same ground and everything else.
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July 4, 2014 3:12:09 AM

Im using 2 molex plugs on the same wire(same ground), i have another molex adapter i can try and another set of molex's from my psu. ill give it a go
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July 4, 2014 3:14:58 AM

alright yea, id like to replace my psu but i just spent all my spare $ on this gpu...
and yea i had a look up its the exact eXtreme series in that tier 5 category...
http://www.amazon.com/Cooler-Master-eXtreme-Supply-RS50...

ive had it for almost a year, seemed to be running perfectly smoothly. i had very little idea it was this bad.
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July 4, 2014 3:18:22 AM

The only reason it hasnt burned so far is that you had a fairly low power requirements in the first place. Now adding a 200W card changed things.... a LOT. With the best intentions in mind, please, please DO NOT experiment any further with this supply. Get a new one ASAP. Let's just hope it didn't take motherboard or something else with it. Fingers crossed.
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July 4, 2014 3:19:59 AM

Alright ill look into it, thanks for your help man.
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July 4, 2014 3:21:48 AM

No problem at all, and best of luck to you. Please report back after installation of the new PSU and tell us how it went. Remember, get something from tier one, tier two (a) or tier two (b) list. Cheers, mate.
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July 4, 2014 3:37:42 AM

5 beeps most likely power issues.
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!