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Do you use a surge protector? If you do, try turning off the power supply to the surge protector and switch on again. There are a number of causes for this problem, the most likely being a PSU problem or a motherboard fault/failure. To check the power from the PSU to the motherboard, you will need a multimeter to make sure enough power is going to the motherboard. Also check the motherboard closely to see if there is any signs of corrosion or blackened areas, which could be caused by overheating components. Check for leaky or burnt capacitors.
Try this procedure! click here. After checking your power supply and it is working fine, put it back again into your computer casing. Next thing to do is to check your motherboard switch (power on). Look for the manual of your motherboard and look for the power on switch. If you find it then get a screw driver and short the pin using the screw driver. Be careful not to touch the other pin! But you have to check all the computer components to determine what is
exactly the cause why it's not functioning. If it's not turning on your computer while you short the power switch on that means probably your motherboard fail. Other option is, in order to troubleshoot the problem of your computer you must have an extra computer with the same model and plug all your components there one by one to determine what is exactly the problem of your computer. Then you can decide what computer parts need to be replace. Have a nice day!
Hi, to find out if the “Keyboard is compatible with your system?” You can do the following: Shutdown the Computer, connect the Keyboard to your computer.Turn on the computer.If, the “Keyboard have a Power Button?”(Turn on) the keyboard.Go to, Control Panel; click on Device Manager.Click to open Keyboards, in the (Keyboard Properties) Click on Driver (Box), next click to Update Drivers! Click OK. Restart the computer.Check keyboards’ functionality. Thanks paul7of9
This info is not enough to give you a specific solution. Try this: Press and hold on/off button for 3 seconds. Turn on button, press f8 continuosly to os start menu, choose safe mode, check sleep and hibernation settings, test for malware/spyware, check startups - run msconfig, disable all startups if needed.
if the power button was blinking amber, unplug your tower, and hold the power button for 30 seconds to 1 minute, to use any excess power stored in the capassitors in the pc. this was told to me by a dell tech, it is a small issue with the 3100=E310, and 5150=E510 Dimension desktops
A flashing yellow power LED is an indication of a failure in the power supply. If under warranty, Dell should be replacing it. If out of warranty, then a 400/450 Watt ATX power supply should resolve the issue.