Solved Graphics card only works on restart

January 20, 2012 at 01:44:27
Specs: Windows XP, Pentium 4, 3GHz / 2GB RAM
I have just installed a GeForce 9800 GT graphics card and installed the newest drivers. However, when I turn on my computer the card does not work. The settings are all set to the lowest and there are lines across the screen. The strange thing is if I restart the card works perfectly. This makes me think it must be a software problem but I have the latest drivers. I also thought it might not be getting enough power (I have a 470W max PSU) but this does not make sence as it would never work.

So just to make it clear, when I turn on my computer the graphics card does not start but if I restart the computer it does. I am quite confused.

Thanks


See More: Graphics card only works on restart

Report •


#1
January 20, 2012 at 05:09:13
✔ Best Answer
Your problem is most likely a power problem. When you just restart, everything is still running at a minimum draw, but as processes start, hardware warms, drivers load, the power supply's components themselves warm, the draw on the power supply goes up and the available available current goes down (especially on a cheaper power supply). The make and model of your power supply, or at least the full specs INCLUDING the amperage on it's 12Volt rail(s) would help confirm you need more power. You should look for a power supply with the following:
A quality name brand.
80% efficiency rating 'bronze' (or higher)
A SINGLE 12 Volt rail (very important) NOT multiple rails.
500 to 650 Watts with a significant number of Amps on the 12 Volt rail.
Look at the top 5 on this page:
http://www.newegg.com/Product/Produ...
These all have between 38Amps and 50 Amps on the 12 Volt rail and all are quality products. Yours probably does not.

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


Report •

#2
January 20, 2012 at 05:33:32
I agree - your power supply isn't up to the task. If you continue to run your system with it, something is eventually going to fry.

Report •

#3
January 20, 2012 at 06:02:40
Thanks for the help, I guess it is the power supply.

The power supply is a Gigabyte GE-P470A-C2. It has 2 12V rails at 14A and 15A. How do I find out what the efficiency rating is?

Thanks again


Report •

Related Solutions

#4
January 20, 2012 at 06:03:30
Doesn't matter if it's not up to par. Replace it.

Report •

#5
January 20, 2012 at 07:01:38
The issue is the 2 - 12V rails. The rail that is supplying the card and other items is underpowered.

You need a power supply with a single 12V rail supplying at least 26A@12V.


Report •

#6
January 20, 2012 at 17:20:01
Replace it. The first one on the list I posted earlier:
http://www.newegg.com/Product/Produ...
is $55. US after the rebate, has 44Amps on the single 12 volt rail, all of the other things you should look for, and amazing customer reviews (look for yourself). This one should even be enough for a future upgrade to an even better graphics card (many, not all of course) should you eventually decide to.

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


Report •


Ask Question