Motherboard won't boot after new graphics card installed

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TheAnt317

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Apr 25, 2014
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This morning I upgraded my PC's graphics card. I upgraded my nVidia Geforce GTX 550 Ti to a Geforce GTX 750 Ti. After booting up the PC, I was greeted with the motherboard welcome splash, as usual, except this time it wouldn't move past it. It just sits there and pressing the keys to access the BIOS, boot menu, etc. do not work. I can only guess my motherboard is having some kind of issue with this new graphics card but am not sure why.

The motherboard is a GIGABYTE GA-Z77-D3H CROSSFIRE SATA 3 USB 3 LGA 1155.
The power supply should also be able to handle the new card. It's a CORSAIR CMPSU-750TX V2.

Thanks in advance for any help!

Edit: I found my solution, thanks to my motherboard's manufacturer. I had to go into the BIOS first and set "Other PCI Device ROM Priority" to "Legacy Only." Then I installed the new card and it worked! :D Thank you everyone for your help, though!
 
Solution
CoolDude X
Check All Cable[SATA And 20+4Pin MB Power Cable] If All Is Well Then Remove GPU,Reset BIOS,Boot From Integrated Graphics,Install Drivers Of GPU,Plig In GPU,And Connect Display To GPU
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TheAnt317

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Apr 25, 2014
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So what you're basically saying is to install the drivers for the new GPU. Because my PC does not have integrated graphics, it's a custom build.
Edit: Well I just plugged in the old GPU and everything still works fine. I installed the drivers, rebooted, plugged in the new GPU and still getting the same issue.
 
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spdragoo

spdragoo

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Oct 17, 2011
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First off, remove the 750Ti & put the 550Ti back in. If it boots, then the issue is with the GPU -- and while I can't speak to the quality of your PSU, the 750Ti shouldn't be affected by the PSU or its quality (nVidia recommends a 300W PSU for it, as it only draws about 60W; even a bargain-basement, craptacular 750W PSU should be able to manage it). Ergo, if it works with the 550Ti but not the 750Ti, there's an issue with the GPU.

If it doesn't boot with the 550Ti -- & I'm assuming that you replaced it as an upgrade, versus replacing it because it went kaput -- then you need to double-check that you didn't loosen up a cable somewhere. Double-check your power connections, make sure the card is securely seated, make sure the SATA/IDE cables are plugged into the board & HDD/SSD, etc.

If that doesn't work... you'll need to borrow a friend's machine & test both cards out -- preferably pick a friend's machine with a high-end GPU in it (R9 290, GTX 970, CrossFire/SLI combination, etc.), where you know they're drawing lots of watts & need a quality PSU to deliver the juice. If they work on another PC, then you have an issue with your motherboard -- possible static discharge damage, possible damage to the PCIe slot, decided to give up the ghost, etc. If one or both doesn't work in your friend's PC (particularly if the 750Ti doesn't work), then again the problem is with the GPU.
 
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TheAnt317

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Apr 25, 2014
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As I said in my reply to CoolDude X, I reinstalled the 550 with no issues whatsoever. I suppose now I have to contact the manufacturer of the 750 (ASUS in this case) and see what can be done about a faulty card. Now, should I accept a replacement from them if they offer it or should I attempt to buy from a different manufacturer?
 
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ImAManiak

ImAManiak

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Apr 5, 2015
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Faults in the production of GPU's are an unavoidable thing for any company. So yes, if ASUS offers to send a replacement, accept it (And I don't know anything about ASUS's refund policy...). The best course of action would be to accept the new card from ASUS, but if another GPU comes in faulty, then ask for a refund (providing you're reason) and buy from another company. I suggest MSI for GPU's as they are quite reliable (I have bought three from MSI and not one came in faulty), they also have the added bonus of running very cool, which is always good.

Best regards,
-Im A Maniak

 
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ImAManiak

ImAManiak

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Apr 5, 2015
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Most, if not all graphics cards have a power connector to allow the PSU to supply power to it. What matters is what type of connector it is (usually 6-pin, 8-pin and sometimes 4-pin), to make sure that your PSU has the necessary connectors to power it. I'm not sure about the 750 to, but I would assume it to be a single 6-pin or 4-pin connector.
 
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TheAnt317

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Apr 25, 2014
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It is indeed connected. Both the 550 TI and the 750 TI share the same 6-pin PCI-e connector. It even had a little green light lit up on it to verify it's got power.
 
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TheAnt317

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Apr 25, 2014
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No, I wasn't connecting both at once, I took the old one out then installed the new one and tried it. When it didn't work, I took out the new one and reinstalled the old one. What I meant was they have the same type of PCI-e connector.
 
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