Question about Gateway 505GR PC Desktop

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Gateway 505GR desktop...failure to start

Gateway 505GR possible switch, power supply, and/or motherboard damage due to surge protection failure? Push blue button on face to restart....lights flash and fan tries to start...sounds like cold car attempting to start,.. like the battery turns engine over and over, but the spark doesn't catch and fire up the chariot.

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  • Anonymous Oct 22, 2008

    I have the same problem. I took my computer to Best Buy Geek Squad twice. The first time, they got it to start fine and ran a scan. They could not find any issues with the hardware or software. The second time I took it back, they couldn't get it to power up. They tested a new power supply and still could not get it to start. They said it must be an issue with the motherboard and that it would cost around $300-$400 for them to fix it. Their suggestion was to buy a new computer.

  • clancykev May 05, 2009

    I have the exact same problem... Geek squad is an absolute joke and is convinced that viruses are the cause of the problem. I tried to argue that a virus could not stop it from completely allowing the computer to start to boot. This happened right after I installed a windows update, Geek squad diagnosis shows no hardware issues. Has anyone gotten theres to work?

  • clancykev May 05, 2009

    I wanted to clarify that Best Buy determined that the Power Supply was not the issue when they hooked up an alternative power supply the same problem ocurred.

  • clancykev May 11, 2010

    I wanted to clarify that Best Buy used an alternative power supply and it was definitely not the power supply that is causing this issue.


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When the power supply goes bad , that is the sign that it needs to be replaced . I would replace it first .

Posted on Mar 12, 2009

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1 Answer

Power button


1. Power Supply Unit (PSU), big box that you plug your black power cable into
2. If you swapped PSU and still no power on, then your Motherboard is fried.

Oct 17, 2013 | Gateway 505GR PC Desktop

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There are quite a few possibilities here. Do you leave your computer on while you're not home? If so, it's possible the computer overheated. If that happened, most likely you processor is damaged, and will have to be replaced. There may have been a power surge, which could have damaged the power suppply or the motherboard. It does nothing when you push the button? There's also a remote chance the switch is merely broken... though I can't say I've ever actually seen that happen. If it does absolutely nothing, it's most likely the power supply, however. If the motherboard or processor were bad, it would probably beep when you tried to turn it on. Not definitely, but probably.

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Could be a virus. I had a similar one, and I had to format harddrive and install windows from scratch (was not recoverable). if you can get logged into windows, go to microsoft and download their free virus protection. if not, go buy a new emachine.

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Most surge protection power boards will protect computer equipment from mains spikes and surges.
A better and more expensive solution is to use an uninterruptible power supply (UPS). These units provide surge and spike protection and also provide power in the event of mains power failure.
Make sure you select an UPS model that meet the power requirements of all your computer equipment that is connected to the UPS with a mains down time of say 1/2 hour to give you time to shut down your computer in an orderly manner.

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PCU turned off itself, I tried to restarted but it dont start. switch button is fine gateway 505gr

check your power cable to make sure power supply is getting power. you may need to replace power supply.

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My computer is not starting after a power failure.

you probably damaged the power supply. open up the tower and check if a light is on the motherboard.

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In addition to your power supply, your motherboard was also probably affected by the surge. Most surges do damage beyond the motherboard. The power supply is still supplying power to it, which is why the fan runs and power lights come on, but it probably isn't doing much more then that. You might want to start looking for a motherboard replacement. The best and most inexpensive place is

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Hello guys,
This problem would arise only when the motherboard doesn't work properly. Check with your nearest gateway service center to get your CPU work again. That would be the only thing to be done.


Nov 20, 2008 | Gateway 505GR PC Desktop

1 Answer

Gateway 505gr motherboard replacement

not powering up does not mean the mother board is bad , the power supply going bad is more likely to be the problem . But your tower is considered to be a mini tower ive got the same one that I replaced the mother board on . dont mess up and get the wrong size board , it will not fit!

Jul 17, 2008 | Gateway 505GR PC Desktop

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