Problem with Dell 4600 Dimension Computer

so you're saying that the computer keeps rebooting?

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The 123 lights on tower translates as:

Routine system activity subsequent to video initialization.
Watch your monitor for on-screen messages.

Disconnect the video cable from the computer and see if you get floating color bars on display. If not, your monitor is defective.

The most likely cause is a failing power supply. Unless you have a tester you will need to buy a replacement. Check the specs and order a suitable replacement. (www.newegg.com is my choice)

If any of this goes past your computer knowledge take your computer to an expert to examine first-hand.

If the tower power LED is a Steady Green and the Diagnostic LEDs on the Back are all Green then the monitor itself appears to be the failure point. See if issue occurs with a different monitor. If the tower LEDs are not all green, then reply with the indications

Hello,
If your monitor is going in Power save mode it can be cause by following reasons.
>Check the data cable going from monitor to your Dell Dimension 4600 Tower is connected properly.The connector will be blue or white in colour.
>If the Dell Dimension 4600 Tower is powering on.

If still in power save mode then try to shutdown Tower and monitor,disconnect power cable from tower and monitor.Hold the power button on tower for 15 seconds.Then again try to connect monitor and check,if still nogo,and if tower has no lights then issue with motherboard or video card or power supply.If possible try connect spare known good monitor.

Thankyou

I have seen with some of the small form factor dell's that there can be a motherboard problem; my expirence with the regular towers and the steady amber light have been power supplies. I have a dimension 9100 that is three years old now and I am on my fourth power supply. I am not sure that you would have one laying around, but in my past expirence its been teh power supply. On the ones that I have seen where it was the motherboard you could clearly see on the chipset where it was damaged from heat (it was burnt). Hope that helps

are you getting the DELL logo screen.

check the primary settings for your default video card.

when the screen goes away try to wigle the cable from the computer to the monitor see if it could be that

try changing your graphic card ( VGA Card ) .. if the problem keeps coming then try the monitor on another computer .. if it works then you have problem with RAM drives