Is my board and PSU compatible with video card?

[jamesmarkof]

Hey guys,

I got a new video card Radeon HD 6770 1GB. Here is the motherboard I'm using: http://www.asus.com/Motherboards/AMD_AM3/M4N68TM_V2/#specifications

Here is the power supply: http://www.newegg.com/Product/Product.aspx?Item=N82E16817339009

When I plug the card in and boot up the machine, I only see a black screen. The monitor does not detect any signal from the video card.

The card seems to be working. The fan kicks off when I boot the box.

What am I missing? I have read that the power supply could be the issue, but it seems to be putting out enough watts. Right?

Any suggestions appreciated.

 

[PoplicoMan]

The power supply you have is a no name. This could mean some bad things, and over rated wattage is one of them. With the PSU you have, I dont think its even giving the stated watts. Your mobo is fine, so I'd say get rid of that PSU

 

[jamesmarkof]

How would you assess this one as a replacement:
http://www.amazon.com/Cool-Power-Gamer-CP-G980-Supply/dp/B004YF9VBG/ref=sr_1_16?ie=UTF8&qid=1355103025&sr=8-16

 

[PoplicoMan]

Nothing but name brand. Just google a list, but I'd say Corsair, XFX, Antec, Seasonic and PC power and cooling

 

[andrewcarr]

If you're looking for one of the cheapest and still good PSU's then look at the Corsair CX 430- http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026&Tpk=cx430

It'll be a good one to run your new card.

And as said before only get name brand PSU. There are some brands that make some great units and some that are only okay (such as Cougar, NZXT, Enermax and LEPA) but overall the list above shows ones to consider, with the addition of OCZ that it.

 

[jamesmarkof]

If you're looking for one of the cheapest and still good PSU's then look at the Corsair CX 430- http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026&Tpk=cx430

It'll be a good one to run your new card.

And as said before only get name brand PSU. There are some brands that make some great units and some that are only okay (such as Cougar, NZXT, Enermax and LEPA) but overall the list above shows ones to consider, with the addition of OCZ that it.

Thanks for the advice. Only let me ask you something. The PSU you're suggesting only puts out 430W. Doesn't the card in question require at least 450? I read that somewhere on this forum.

Here is the card btw: http://www.newegg.com/Product/Product.aspx?Item=N82E16814150540

 

[andrewcarr]

Believe me I know it can run that card at 430W and I know it'll say it needs at least 5-600 watts, which is just security for the bad PSU lost of people buy... *cough*.

If you look here it'll show how much you're system is really using if you don't believe me.
http://www.extreme.outervision.com/psucalculatorlite.jsp

I recommend that same PSU even if you're getting a 7850 or any other GPU with one PCI-E connector. It's also the PSU running my computer right now.

 

[jamesmarkof]

Believe me I know it can run that card at 430W and I know it'll say it needs at least 5-600 watts, which is just security for the bad PSU lost of people buy... *cough*.

If you look here it'll show how much you're system is really using if you don't believe me.
http://www.extreme.outervision.com/psucalculatorlite.jsp

I recommend that same PSU even if you're getting a 7850 or any other GPU with one PCI-E connector. It's also the PSU running my computer right now.

I'm not questioning your expertise at all. I'm genuinely curious how it all works. Incidentally, I ran a wattage check for my system on the site you provided. It says recommended 350W. My PSU says it's maximum power is 585W. I mean, is it really possible that the PSU specs are that much overblown? Can there be something else wrong other than the power supply?

 

[andrewcarr]

Yes it is possible that it's that out of spec. I know this isn't yours but it can't hold over 200 W at a 585 W rating.
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=204
conclusion
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=204

I still say it's most likely the PSU unless the card isn't plugged in right. Make sure it's seated in the motherboard and that it's got the PCI-E power connector connected.

Also make sure your monitor is connected to the GPU not the motherboard video output.

Even if you do fix this problem I still recommend changing that PSU.

 

[jamesmarkof]

After a few tests, I really doubt it's the PSU. I bought another machine and tried the card on it. Works like a charm. So the PSU in the new machine must be good right? I take it out and put it into the original box, put the card in - nothing. I really think my mobo is somehow related to this issue.

 

[andrewcarr]

Some Nvidia chipsets have trouble running AMD cards without modding them. It could be that the 6xxx series works but not the 7xxx.