A88X-pro with A10 not starting when HD 7950 is connected

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takintomori

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Feb 25, 2014
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I just bought a new GPU and now i cant get it to work, I connected my new Powercolor Radeon HD7950 Boost state to both my PCIE 3.0 and 2.0 slots and when i connect the 2 6 pin power connecters to it my pc will not boot. Specs are
A88X-pro
A10-6800k @4.4
8 GB DDR3 Ram @1600mhz
Corsair Tx 750w


Sorry to bump a dead thread, I now can get the fan on the card to boot, but if i connect the 2nd power adapter (which i assume is the one for the card itself) my motherboard gets absolutly no power. I have tried with 3 different PSU's now. I had a friend test it for me and it worked for him, is there some setting i need to enable/disable in my BIOS?
 
Solution
Cristi72


Let's sum up the events:

1 - you had a working system with an A10-6800K, which is an APU (a combination of CPU+GPU);
2 - in order to boost your gaming experience, you tried to add an HD7950, but the system didn't post anymore;
3 - you tried different PSU's and also tested your PSU on another system, the PSU is OK.

What you can do now:

4 - take out the HD7950 and see if the system is able to boot as before (the monitor cable should be connected to the motherboard);
5 - test the HD7950 on another system, using your PSU (7950 is a power hungry card, so it needs a good quality PSU, which you have).

If still no post, do a CMOS reset...
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Somber

Somber

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Jul 6, 2014
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Try running your old GPU see if it boots, if it does install the drivers that came with the new gpu, update your bios if you havent already. try it again. If you have 2 PCI-E slots try the other one.
 
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Somber

Somber

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Jul 6, 2014
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Does your computer have integrated graphics? try that if it does then install the drivers for the GPU and update your bios
 
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takintomori

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Feb 25, 2014
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Which cord is the monitor connection? ore are you meaning directly the literal pc monitor, sorry, first time with doing this in a long while. I have removed the 8 pin connector of my mobo, same thing, connected everything to the new GPU. same issue. MOBO light shows green so its getting power, but when I turn on my PC my fans dont even spin.
 
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takintomori

Reputable
Feb 25, 2014
18
0
4,510
Sorry to bump a dead thread, I now can get the fan on the card to boot, but if i connect the 2nd power adapter (which i assume is the one for the card itself) my motherboard gets absolutly no power. I have tried with 3 different PSU's now. I had a friend test it for me and it worked for him, is there some setting i need to enable/disable in my BIOS?
 
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Cristi72

Cristi72

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Jun 25, 2014
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For your motherboard to work, you will need two cables to be connected: an 24-pin and an 4-pin (or 8-pin, if the PSU have it). In addition to that, you will need to connect 2 x 6-pin PCI-E connectors to the graphics card. If this is your PSU, it should be like this:

http://imgur.com/OCKnGRI

About the PC-to-monitor connection: initially you used the onboard graphics, so the monitor cable was connected to the motherboard: http://imgur.com/TQ50cVW

When use a discrete graphics card, you must disconnect the monitor cable from the motherboard and connect it to the new card: http://imgur.com/lBKwQKa
 
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Cristi72

Cristi72

Admirable
Jun 25, 2014
1,636
0
6,960


Let's sum up the events:

1 - you had a working system with an A10-6800K, which is an APU (a combination of CPU+GPU);
2 - in order to boost your gaming experience, you tried to add an HD7950, but the system didn't post anymore;
3 - you tried different PSU's and also tested your PSU on another system, the PSU is OK.

What you can do now:

4 - take out the HD7950 and see if the system is able to boot as before (the monitor cable should be connected to the motherboard);
5 - test the HD7950 on another system, using your PSU (7950 is a power hungry card, so it needs a good quality PSU, which you have).

If still no post, do a CMOS reset as instructed in motherboard's manual (power OFF the system, unplug the PSU from mains, find the CLRTC header -the bottom right on the motherboard-, move the jumper to 2-3 position, wait 30 seconds, put the jumper back in 1-2 position, connect the PSU to mains and power ON the system again).

Under NO circumstances you will NOT:

- try to connect the PSU to mains and boot the system with the CLRTC jumper in 2-3 position (you will damage the motherboard);
- try to boot the system without the (2+2)-pin power cable connected to the motherboard (in best case scenario, the motherboard will not post);
- try to boot the system without both 6-pin PCI-E power cables connected to the HD7950 graphics card (you are risking to damage the motherboard's PCI-E x16 slot).
 
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