If you leave the tower unplugged for a while then plug in the cable (with power turned on at the wall) does the fan kick into life for a few seconds?
It may be that your powersupply is faulty.. sometimes but not always this can show symptoms such as flickering light on the power button or a clicking hard drive. The last PC we had did not show these symptoms but did only power the fan for a split second. A power supply swap fixed it.
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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
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.
I used the
reset button on my last one whenever ctrl/alt/del failed to soft boot
Here is what Dell Chat tells me to do if ctrl/alt/del doesn't work:
Turn off the system from the power button. Remove the plug to the
power supply from the back off the system tower.Then hold the power
button on the tower down for 10 secs ( with the power cord removed).
Reconnect the power cord and then restart the system.This time do a
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