Turning on Gateway 554GE

August 3, 2010 at 08:37:08
Specs: Vista
Normally this computer runs fine. Recently i changed the graphics card to an ATI 4650 from a radeon x300. After I put the new video card in I turned it on and the blue light wouldnt turn on or the monitor, but I could hear the fan and it sounded like it was running. I waited a bit and tried again and then it turned on normally. However, the next day i was playing a game and it froze. I had to turn the computer off and now when I try to turn it on it has the same problem as before (no blue light or monitor on). I tried turning it on a few times and it wouldnt start up. I also tried putting my old video card back in and I still get the same problem. Any help is greatly appreciated.

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August 3, 2010 at 08:54:51
The HD4650 video chipset uses a lot more power than the X300 video chipset.

Power Supply Requirements: 450 Watts (75 Watts 6-pin)

As in, minimum 450 watts, a 6 pin PCI-E connector must be connected from the PS wiring to the card's power socket

Your power supply must have at least the minimum capacity required to support a system with the graphics card you are using installed, or the max graphics card you might install in the future.
(Onboard video - video built into the mboard - IS NOT A CARD ! )
If that info is not in the ad for the video card, you can go to the video card maker's web site and look up the specs for the model - often under system requirements - the minimum PS wattage, and, more important, the minimum amperage the PS must supply at 12v is stated. If you don't find that, any card with the same video chipset including any letters after the model number has very similar minimum PS requirements. Some power supplies have two or more +12v ratings - in that case, add those ratings to determine the total +12v current capacity.

If you're a gamer...
In most if not all cases, the max capacity rating of the PS is an intermittent rating. It's recommended that you do not load your PS to any more that 80% of that rating if you are going to be using something that puts a constant load on it, such as playing a recent game for hours on end. In that case, you multiply the min capacity stated for the system with the particular video chipset on the card by 1.25 to find the min. capacity of the PS you should get.

If you need to get a PS with more capacity, you can usually replace it with any decent standard sized standard ATX PS.

Standard (PS/2) power supply size - 86mm high, 150mm wide, 140mm deep, or 3 3/8" h x 5 7/8" w x 5 1/2" d , or very close to that, though the depth can be more or less for some PSs.

Don't buy an el-cheapo PS.
See response 3 in this:

" I also tried putting my old video card back in and I still get the same problem."

If the PS output capacity is considerably under 450 watts, you may have damaged the PS by installing the HD4650.

Did you unplug the computer, or otherwise switch off the AC to the comuter, at ALL times when you were plugging in or unplugging the vardsor any wiring connection ?
If you didn't, you may have damaged something.

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August 3, 2010 at 09:08:24
ok so i looked it up and yes the card i got (ATI 4650) has a power supply requirement of 400 watts (my comp's psu has only 300 watts). However, im confused as to why when I insert my old video card it still wont turn on properly. Any help in regards to this?

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August 3, 2010 at 09:13:14
sorry I didnt scroll down to read the last bit of your message. But yes everything was unplugged when I was changing the card. So maybe it is possible I damaged the power supply. Is there any test for this. I would like to pin point the problem before I go out and purchase another power supply

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August 3, 2010 at 12:04:56
The only sure ways are to try another PS with your computer, or to try your PS with another working computer that will work okay with a 300 watt capacity PS.

If you can borrow a PS from another working desktop computer you have, or from a friend's computer, that has at least a 300 watt output capacity, preferably 400 or more
- hook that up and try it with the X300 card
- if it has at least 350 watts capacity, try it with the HD4650 card, but if it's only 350, don't run the computer for very long.

If you can't do any of those things, go to a local place that has power supplies and lots of computer parts, take your computer and at least it's power cord with you, or that and a mouse and keyboard, and either buy a (DECENT) power supply and hook it up there - if the computer won't work, it would probably be easy to return the PS and get a refund - or have then try any PS with enough capacity with your computer, which you may have to pay a small fee for them to do.

Smaller local places that repair computers and build custom computer systems and have lots of computer parts are more likely to have lower prices and be more customer friendly.

If the computer won't work with another PS, your PS has probably damaged the mboard while malfunctioning.

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