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System unit it does'nt work after i turn on my computer but the power supply is running.

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Re: system unit

Dead mobo main possibilty.
You could try reseating the RAM and the AGP / PCI cards if you have any.
If neither of those work its your mobo =(

Posted on Dec 03, 2007

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After i turn on my gateway model GT5404, the three fans turn on for 3-5 seconds, then stop spinning and my system does not turn on

Yes. Exactly. You have found the problem.

Uses an ATX form factor Power Supply. One that is common in a LOT of desktop computers. Readily available.

Gateway Support indicates there are three generic Power Supply makers, for the Power Supply in your computer,
Delta, HiPro, and Bestec. (Same one's for HP too)

Indicates the form factor is uATX/BTX.
Whatever, Gateway.

An ATX Power Supply's case dimensions are approximately -
6 Inches Wide, 5.5 Inches Long, and 3.5 Inches Tall.

Power cabling is also a designator when referring to ATX.
The new Power Supply's on the market, cover ATX power cabling, and more.

This is an example of an economical, yet reliable, Power Supply, that will work,

Has all the power cables you will need, plus more. Tie the unused power cables up out of the way. (USE plastic ties)
Concerned it is a 500 Watt unit, and not a 300 Watt unit as came with your computer?

No need to be.
1) A computer ONLY uses the power it needs, and NO more.
If you are surfing the internet, and the computer only needs a 100 Watts, it will ONLY use 100 Watts.

Playing an intensive game, or using an intensive program?
Could use the whole 500 Watts.

2) Will it harm your computer? No.
You could use a 10,000 Watt Power Supply, and it won't harm your computer. (10,000 Watt is an exaggeration)
Because a computer will ONLY use the power it needs, and NO more.

For additional questions please post in a Comment.

Aug 25, 2012 | Gateway PC Desktops

2 Answers

Power supply unit starts (fan running) but computer does not....

Try swapping out the ram 1 at a time, making sure there is one memory piece there while testing. If no! check hard drive for activity.

Mar 14, 2012 | HP Pavilion a1102n PC Desktop

2 Answers

My Compaq Presario SR1250nx will not turn on. The power chord is attached and power strip is turned on. I've also tested on a stand alone outlet to ensure it wasn't the power chord. A little green light...

Looks like your power supply's failed. The green light on the back of your power supply is just a neon light that just confirms that the power lead is OK, it does not relate to the status of the power supply! Try powering it up with another power supply, or replacing the power supply.

Oct 14, 2010 | HP Compaq Presario SR1250NX (PJ534AA) PC...

1 Answer

Its nt starting.. the output is nt cuming on headset even i connected it...

You should check the connections and you should also try another wall outlet, you the computer still not coming on you may have power supply problem,check to see if there is a switch on the power supply and set it to on if problem not solve you should replace the power supply.

Aug 15, 2010 | PC Desktops

2 Answers

Compaq presario S0000/8000 won't turn on. Green

try reseating the VGA cable to from your monitor, also reseat the Video card if you have an expansion Video card on your system, then try starting your computer again if the green blinking lights will still be blinking, if so turn your Computer off again and try removing your memory rams from its memory slots then try them One at a time and try from one slot to another if you have at least 2 memory cards on your system, by doing this you will atleast find out if one of your memory cards are faulty or if one of your memory slots on the motherboard is faulty again try one Ram at a time then turn the system on to see if the system boots or not also to this to trying both slots as well if the system turns on then possible either one of your rams or one of your system boards memory slots can be faulty, this process take time and patience but this is what 99.9% of all computer technicians do to isolate the issue.

Jun 26, 2010 | PC Desktops

5 Answers

My Acer Aspire X1700 power supply burnt out....

The manufacturer is Delta Electronics, Inc.

Their website is down.

However, I did find it :c) Took awhile...

Jun 27, 2009 | Sony VAIO PCV-RS724G PC Desktop

2 Answers

Deep freeze computer inresponsive

it sounds like your computer power supply went bad.
go to your local computer store and buy a power supply, install it and you should be up and running.

that is if you didn't fry everything from running it without the proper cooling.

make sure that you have proper cooling fans in your computer, a fan outside will not do it.
It sounds like your power supply fan stopped working and it just got to hot and died

May 24, 2009 | E-Machines eMachines Desktop PC

1 Answer

No singn light or sound

Did you check the power lead or the power supply in another pc. if you checked the power supply unit in another pc and it's fine, there is a faulty switch on your pc or faulty motherboard. Check that the 21 pin connector from the power supply unit to the motherboard is in properly as the psu will not work if disconnected from the board.

Oct 31, 2006 | Packard Bell iMedia SL 9553 (P660401806)...

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