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Posted on Jan 02, 2017
Check for motherboard or powersupply issues. The GX620's were in a range of DELL models that were affected by bad capacitors.
Failure of motherboards and power supplies is usually due to breaking capacitors. A few years ago a capacitor company stole the "recipe" for making capacitors from another company and tried to make their own, unfortunately they did not get the ingredients right and the capacitors started breaking after 2-3 years of use. They sold these capacitors at very cheap prices and a lot of computer companies (not just DELL) and power supply makers bought them. This is easy to diagnose. Look for capacitors (caps) (they look like little tiny soda cans) on your motherboard (mobo). They should be perfectly flat on top and not bulged or swelling or leaking anything. Make sure you look at the ones under the fan shroud (back of processor). The dead giveaway is the fact that you are getting the same thing after you switched video cards. If you listen to your computer as it starts up, a few of the devices may not start (hard drive, etc). A failed video card will usually give you the "No signal message", but the computer should sound normal when starting up. Mobos are usually expensive to replace because the computer makers have them made especially for them and only order so many. They usually do not have a lot of extras laying around. There are a few companies that will repair broken capacitor issues. Also if you add a bunch of extra components without upgrading the power supply you can suffer underpowered situations and this could cause your problem. Let us know what you find out.
Posted on May 01, 2009
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If you are having problems with your video card
the drivers might not be installed correctly you might
have to uninstall the graphics card restart your computer then reinstall the
graphics card and its drivers
If your computer
came with a motherboard disc the drivers could be on it
Click start control
panel administrive tools computer management device manager scroll to display
adapters + to expand you might see a yellow question mark ? or exclamation mark
! or a red x right click select reinstall drivers or
you might need to
This package supports the following driver models:
Hope this helps
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