Question about Gateway 840GM (RB840GM) PC Desktop

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My Gateway model 840Gm will not come on the fan will but the monitor says no signal"

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Make sure the video cable is connected properly to its place.

Posted on Mar 11, 2009

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Gateway a computer desktop has power but nothing on screen the computer doesn't have a tower


1) Computer doesn't have a tower? Means it is a 'pancake style' of desktop computer. A flat model.

2) No signal on monitor screen?
Good.
At least we know the monitor is good.

Problem is monitor cable, IF separate cable; or computer.

Computer isn't sending a video signal.
No Signal, Power Saver Mode, etc.

If an older CRT type monitor, (Looks like a small TV), and monitor cable is not detachable; use a known to be working monitor, and monitor cable.

If a separate monitor cable, use a monitor cable from a working computer, for a temporary test unit.
Put it back when deemed monitor cable is the problem.

Logic at this point, would deem something is wrong with the graphics chipset.
Whether mounted directly to motherboard, (Integrated), or a separate graphics adapter card. (Graphics/Video Card)

However, computer could be dirty inside, or have a bad Power Supply.

LED's (lights) light up? Maybe fans spin?
Means nothing.

1) If ALL of the Light Emitting Diodes were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor can use from 51 to 130 Watts of power.
Just depends on what Processor it is.

Older desktop computer?
Ummm, 35 to 40 Watts.

That is why LED's can light, and maybe fans spin, but no computer.
NOT enough power to turn the Processor on.

Computer needs to be CLEAN on the inside. Inside of Power Supply too, as well as possible.

Proper method to do this procedure, post back in Comment if you need guidance.

Also remove ALL Ram Memory modules, and clean gold plated contact pins on bottom; with pencil eraser.
Reinstall. Make SURE they are seated in tight, and Lock 'ears' are locked in place.

Post in a Comment, as to the model number.
Example, DX4300-05. Should be on back of computer.

Regards,
joecoolvette

Mar 22, 2013 | Gateway PC Desktops

2 Answers

I have a Gateway 840 GM and I have just replaced


At first check the battery that's on you motherboard. The battery powers the bios on your motherboard. The bios detects you push the power button and turns on the pc. If the battery is dead the bios has no power, so it cannot detect you push the power button and will not turn on the pc. So replacing the battery will solve the problem. If the battery is not the problem, I think your motherboards bios is dead. Maybe it can be fixed but you'll have to send it back to the manufacturer I think.

Mar 29, 2010 | Gateway 840GM (RB840GM) PC Desktop

1 Answer

I need to disable my browser


Are you talking about Internet Explorer? If so the good folks at AOL should be able to tell you how to set the AOL browser to be the default.

Sep 15, 2009 | Gateway 840GM Intel Pentium D 830 3GHz /...

1 Answer

Part number for motherboard?


just look ur Processor and memory what kind of motherboard can support.

Mar 21, 2009 | Gateway 840GM (RB840GM) PC Desktop

1 Answer

Monitor is blank


No.. If this is a video adapter issue, you'll still be having a blank screen and not 'check cable' signal. This might be some internal issue with your monitor. You don't you try connecting it to your laptop (if you have) or your friends' comp. And open the CPU cover and see if the graphics card is proper by giving it a through look. Look if the graphics card fan spins. If it doesn't have a fan, switch off the pc. open the cover remove the gcard from its port carefully and then inspect if for any burnout of loose parts.

If your gcard is fine, i suggest you give your monitor for service..

Mar 16, 2009 | Gateway GT5468 Desktop PC

1 Answer

Gateway gt 5014 wont boot up


The problem may be your video card.

Mar 12, 2009 | Gateway GT5014 PC Desktop

1 Answer

Monitor does not come on when powered on, it says no input signal


Check your video card. It sounds like it has went bad. Hope this helps.

Jan 08, 2009 | Gateway 420GR PC Desktop

1 Answer

No signal, Gateway 506GR


Start by disconnecting the new DVD writer and verify all power supply connections are not shorted. 

May 01, 2008 | Gateway 506GR PC Desktop

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