Solved Monitor won't turn on with new graphics card

December 27, 2011 at 19:42:46
Specs: Windows Vista
I just bought a new power supply and graphics card, I put everything in their specific places, and loaded the PC, and the monitor was completely blank, but I could here the PC loading in the background. The Power Supply worked fine with the integrated card, but not my new one. I tried setting the BIOS to PCI-E, and disabling the integrated card, both had the same results of blank screen with PC loading in the background. I think the problem is just the graphics card, but I would like some help.

New Graphics Card: GeForce GT 440

Power Supply: http://www.newegg.com/Product/Produ...

My computer is a Compaq Presario SR5450F

Specs: http://h10025.www1.hp.com/ewfrf/wc/...

Any help would be great.


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#1
December 27, 2011 at 20:16:15
✔ Best Answer
It probably is your power supply that is the problem.
Your power supply being 500 watts SHOULD be enough (at least in theory) but the problem is that you have two 12 Volt rails with only 18Amps on each and more amperage on the 3.3V and 5V rails then you will ever need (30Amps on each). This is a manufacturer's way to push the Wattage numbers up cheaply and get more money for the power supply, but it is wattage you cannot use. Then it is not certified at 80% efficiency so you further are not getting what you think you are getting since that is input wattage and output is significantly less on lower efficiency models.
You possibly could have used even a 400Watt unit IF it had only one 12Volt rail with at LEAST 22Amps on it and 80% efficiency rating, certainly a better 500Watt unit would work.
If you can still return that power supply, try exchanging it for one of these:
http://www.newegg.com/Product/Produ...
http://www.newegg.com/Product/Produ...
http://www.newegg.com/Product/Produ...

You have to be a little bit crazy to keep you from going insane.


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#2
December 27, 2011 at 20:32:07
While I am not a fan of multiple +12V rails, I don't think that is your problem. The card you selected only draws 7W at idle and 55/65W under load. Divide those numbers by 12 to get the amps at 12V. Comes out to about half an amp at idle and 5/5.5A under full load.

When first booting up the card is not under load so the PSU should be OK.

I would guess that you don't have the card fully seated.


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#3
December 27, 2011 at 21:08:14
If you could refer a power supply that has a back fan only that would be great, my computer only takes power supplies with a back fan, and thank you for reply.

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#4
December 28, 2011 at 05:31:53
Go to Newegg, power supplies, computer power supplies, advanced search, select the wattage range, Single 12volt rails, 80% efficient or 80% efficient bronze, search, then sort by Customer Ratings. You will get a nice long list to choose from.

You have to be a little bit crazy to keep you from going insane.


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#5
December 28, 2011 at 06:18:12
I doubt the power supply is the problem. I wouldn't have recommended that particular model, but it's specs are good & it's more than adequate for your system. I don't know why you feel you needed a PSU with "a back fan only", but that's your business. Unless the unit is defective, you do NOT need to replace the power supply again.

The GT 440 isn't a high performance gaming card & doesn't consume much power. It gets all it needs from the PCIe slot & doesn't require a 6-pin PCIe plug-in. You didn't state which make/model you got, but the following "higher end" ASUS model with GDDR5 memory only uses 7W at idle & 55W under load. As it says in the review: the "GeForce GT 440 is really not made for gaming, even though we see it manage 1024x768 at lower detail setting in older titles."

http://www.techpowerup.com/reviews/...


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