My pc (gt5676) will not turn on at all. i was looking to purchase a new power supply, but want to get one that is not through gateway. i opened the tower and found atx-300-12eb3. my question is; is their another power supply that can be used to replace this one that could be purchased on a more trusting sight like new egg or fry's? Thanks for any help on this matter, PS

If one desktop is not turned off while you press the on button in front of the cabinet or shutdown button in the screen means one of the driver in your desktop is not working properly. please check all the drivers or reinstall / update them

u can buy power supply testers, just a device you plug the power supply into, or try a new power supply. but if nothing is happening no fans etc theres a good chance its just the power supply.

This power supply should work out fine for you if you haven't added a graphics card. It's very popular and pretty inexpensive:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153023

First turn off the computer and unplug all of the cables from the back (and front ports). Then remove the two large screws that hold the left side panel in place. These are on the back of the computer. (One is even with the power supply; the other is in line with the expansion slots). Then slide the left panel back about 1/2" and pull it away from the computer. Now you can clean inside the computer.

For pictures of where the thumbscrews are, see http://support.gateway.com/s/CASES/GERSHWIN/3507057Rfaq2.shtml .

Remember to ground yourself to the computer by touching a metal part of the case when you move around the computer.

I hope this helps.

Cindy Wells

You need to purchase a PCI-Express video card.
Your current graphics are built into the motherboard, so you don't need to remove anything, just install the card in the PCI-E 16x slot.

Bear in mind, that you should not try to purchase a power-hungry card, as your PC's power supply is only rated at 300W. Also you will need to make sure that - if the card needs a special power connection plugged directly into it - there exists a lead coming out of your power supply with suitable connector.

Summing up, you'll need to open your case to look for the extra power lead for graphics card, and shop for a card that either accepts the power connector you have, or does not need additional power.

have you tried replacing the monitor or the LCD? if not please do so then try.

Is it powering off, or is the display just going black? Check to see if the keyboard is still active - can you see the Caps Lock light go on/off as you toggle the key?

pput old memory back in if it works then you have a bad memory chip or the wrong kind or not matched up.

Sounds like there may be more than one problem, so first let's make sure you shut the computer down completely:

1) Press and HOLD the power button on the computer tower until it goes completely dark. A single press often puts the computer in sleep mode, so holding the key for approximately 5 seconds usually forces a power off. After doing that, If you're still not sure if it powered off, unplug the AC power cord from the back of the computer tower for a few seconds and plug it back in. Now, make sure all other cables (monitor, keyboard, mouse) or wireless USB adapters for keyboard and mouse are securely plugged in where they are supposed to be.
2) Press the power button on the computer tower briefly to turn it back on.
3) Everything may be working now, but if not:
a) Monitor still dark? Make sure the monitor is on and plugged in, also, there is often an input source button on the bezel of the monitor to toggle between input sources (such as VGA, DVI and even HDMI). Press and wait a few seconds for a picture, repeat slowly at least 3 times.
b) Keyboard or mouse still not working? If wireless, make sure they have fresh batteries and that the wireless USB adapter is plugged into a USB port firmly. If wired, make sure the cables are plugged in firmly into the correct places on the back of the computer.

If all that fails, your new computer may be faulty and need to be returned to where you purchased it.

*check for the powercord wheather it is good or not

*check the power outlet

*in bios see wheather hardware settings are correct

*open the system then see power switches are connected properly or wheather there is an any loose connection

*check the cpu fan is working properly or cpu is heating and see cpu is placed properly

*keyboard is connected properly

*check jumper settings are proper

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