Blue light on the start button on my e-machines desktop keeps blinking and mouse stopped working what is wrong

IF THE POWER LIGHT IS BLINKING BLUE - The computer is in standby mode. Press a key on the keyboard, move the mouse, or press the power button to resume normal operation.

You can find its Service Manual here
http://downloads.dell.com/Manuals/all-products/esuprt_desktop/esuprt_vostro_desktop/vostro-420_Service%20Manual_en-us.pdf

i have the same problem. i am worried. i was playing counter strike and we finished. everybody was congratulating. shortly after a loud beep a bit lower pitch than the turning of and on noise that the headset makes. i turned it on and off. the only thing that stopped the beep was to mute the mic. fiddles with the 2 buttons, the light dimmed greatly and the mic started blinking blue. if you are able to find any way to fix it please contact me on skype : Sassy_Sasquach. Thanks!

green=power in motherboard.
blue=stand by.
yellow=memory powerd

Will the tablet work with the mouse? If it does not, is not working is the blue LED light on. If the LED is not working try another usb port. If the mouse works go into the Wacom tablet properties from the start menu. Select the grip pen from the tools. Click on the default button to restore the stylus to factory settings. When you press the pen you should see the pressure scale rise. You can also test the eraser pressure. You could also replace the stylus tip to see if that works. From the Wacom site you can order a new stylus or tips if it is found defective.

try a diferent keyboard and mouse

Normal 0 Press the Receiver button (and the lights will start flashing.
Then if the Keyboard isn't working, press the small RESET/CONNECT button on the back of the board to connect the keyboard to the receiver.

If the MOUSE isn’t working, push the small RESET/CONNECT button on the back of the mouse to connect to the receiver. Then they should work okay.
Hope this helps. Bud

Move you mouse to the bottom of the screen. press the right mouse button. Select properties. Uncheck autohide the taskbar. Press ok.

Did you try putting in new batteries.

Normal 0 If the mouse doesn't have a little door to open on the bottom, then try this.
Just behind the Left and Right keys where your hand rests, apply firm pressure down on the cover and slide to the rear. Some mouse manufactures have used this type of access to replace the batteries.


Normal 0 If it’s a wireless GE mouse turn it on by pushing the button on the bottom and hold till the red light comes on. Assuming the computer is running, press the Blue light on the Receiver and press the button on the bottom of the mouse and it should start tracking on the monitor.
Hope this helps. Bud

Yes, it may be that the +5v supply from the PSU is faulty, as the PS/2 ports run on 5v and USB runs on 9-12v. Replace the PSU with another of the same form factor and same power rating or better (>=230W). They come at ~£30, so not too expensive. For a little more. Try this:
http://www.quietpc.com/gb-en-gbp/products/psus-300-500/x-red-psus

Here is what I found about the Nexxtech Notebook Wireless Mouse (NWOMMI):

1. The 2 AAA batteries must be inserted correctly. Look carefully at the "+" and "-" marking on top of the battery compartment and put your batteries in accordingly. Otherwise the mouse will not work, and could be damaged. After the batteries are inserted, the red light at the bottom of the mouse should come on. More on batteries below.
2. Insert the USB receiver into a USB port. The blue light should come on. Press the little button next to the blue light and the light should start to blink,
3. Whild the blue light is blinking, press the connect button at the bottom of the mouse. It is the big black dot inside the white label. Check that the blue light on the receiver is blinking faster, and then change to a steady light.
4. Now check the function of the mouse by moving it on a texture surface.
5. If all goes well, your mouse should be working.

However, here is the bad news. Either due to bad design or some flaw in manufacturing, the mouse consume batteries like crazy. I used fully charge NiMH AAA batteries and they last for only a few hours! And the worst part is that, I checked the batteries when the mouse stop working, ONE of the batteries is COMPLETELY drained, in fact it registered a reverse voltage of -0.1 volts (a charged values is +1.2 volts). This is definitely engineering problem. Note that even when the batteries are in this state, the red light may still come on, and sometimes the re-connection seems to be ok (i.e. the blue light blink faster and then changed to steady). However, the cursor will not work when you move the mouse! Recharging the batteries and the mouse will work again.

Based on the above observation, the mouse instead of having a power-saving feature, it actually has a power-wasting feature!!!