Installation graphics in my HP compaq dc7800 (sff)

So, basically, what I'm trying to install a graphics card in my Hp dc7800 small form factor, I've done the basics google search, reading many forums and will try to understand exactly how do youtube videos.

I am almost of ideas and this is the first time that I really try to replace / update my graphics card.

PC QuickSpecs: processor Intel core 2 duo 2.83 ghz, 4 GB of ram (physically available about 1 GB)

Windows Vista Business (32-bit)

Graphics card: (dell) Ati radeon HD 3470 256 MB Low profile (such as new / refurbished)

I'm almost certain that this graphics card is compatible to ensure after-hours. Now, I did all the evidence; Uninstalling the Intel Q35 integrated graphics chipsets, power off the computer, inserting the radeon 3470 safely and without a doubt, go into bios and try to identify the correct settings to disable the integrated chipset (did not, which makes no such option).

Here's the question, when I do the following steps, when the graphics card is in, I turn on the computer, everything works well and plug the monitor into the slot of the card (with VGA adapter) only that the monitor DOESN'T light up as it normally would. Its black as if his sleep on (the monitor). same results plugging monitor on board VGA output WITH the card inside. When I take the card, plug the monitor into the VGA output start the computer, everything is fine.

I need to solve this problem, maybe it's something that I do not correctly. I'm not an expert and any help is appreciated thank you... !

NOTE: (cannot be a personal mistake, as my brother has the exact same PC and specifications with the same exact card - and problem)

You are the very welcome.

You would know immediately if you clear the CMOS worked. You would have seen some videos on the screen.

Assuming that you always had a black screen, then the card is not good and you have no other choice than to try another video card.

Good luck for your next video card selection.

I would go with my recommendation, but it is up to you.

Tags: HP Desktops

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