Agatek A710S: Laser will not turn on with full battery charge. Laser will rotate and turn on if I continuously hold down the power button (8). The remote control when turned on flashes RPM in 21 with 000 for rotation speed and at the same time the Star symbol flashes in 23. I cannot set the rpm rate or change the manual mode.

switch failing

Press and hold the Power button for a full 40 seconds. After the first 6 to 8 seconds, the screen will go blank, which is normal. Continue holding the Power button
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After the 40 seconds, release the Power button. The charge indicator light will turn on after a few seconds.

Hold down power button until shuts off. If freezing continues then has a virus. Go to app store and download avast and do a full system scan. If can't do that then do a factory reset. Back up everything on computer first. Hold down home button, power button and volume down at the same time when powered off. After boot screen release only the power button. When a screen loads use volume keys to navigate to factory restore and press power button then wait till done. If volume down doesn't work then use volume up instead.

1. Press and hold the Power button for a full 20 seconds.After the first 6 to 8 seconds, the screen will go blank, which is normal. Continue holding thePower button.
2. After the 20 seconds, release the Power button.The charge indicator light will turn on after a few seconds.

Chances are that your battery doesn't / wouldn't hold a charge anymore. The laptop runs off battery power. When it is plugged in, the AC power "goes right through the battery", to support the laptop's operations. When the power cord is unplugged, and the battery doesn't hold a charge, the laptop will shut down, as your battery is (too) low to continue supporting the laptop's operations.

The easiest way around this problem is to get a new battery for the laptop.
If your battery is (quite) new (and a Lithium battery), you may wish to see if you can "revive" the battery's "life" ... first by depleting the battery (completely), then charging it (until it shows it is full, plus a couple more hours), and repeating this process a few times. If you're lucky, the battery will slowly/gradually start to hold some charge, but, don't expect it to be very long.
The (preferred) way to use re-chargeable batteries is to charge it fully, unplug it from the external power source, use it until it is depleted, then plug in the external power source to charge it up (fully) again .... and NOT to keep it on a power source all the time.

1.Check the device's battery level for at least two bars of strength.
2.If the battery level is low, charge the battery.
3.If the issue is not resolved, remove the back cover.
4.Remove the battery.
5.Wait 10 seconds.
6.Press and hold the W key.
7.While pressing down the W key, re-insert the battery.
•The device restarts and after approximately 15 seconds, the 'Recovery' screen appears
•Release the power button but *continue holding the home button*, for another 30 seconds.
Step
Thanks

1.Check the device's battery level for at least two bars of strength.
2.If the battery level is low, charge the battery.
3.If the issue is not resolved, remove the back cover.
4.Remove the battery.
5.Wait 10 seconds.
6.Press and hold the W key.
7.While pressing down the W key, re-insert the battery.
•The device restarts and after approximately 15 seconds, the 'Recovery' screen appears
•Release the power button but *continue holding the home button*, for another 30 seconds.
Step
Thanks

Hold the power button and the home button down at the same time for 20 seconds. if it still doesn't power on, try to put it into DFU mode and plug it into iTunes to restore it:
1. Hold the power button and home button for 10 seconds. 
2. Let go of the power button and continue holding the power button. 
(http://www.iclarified.com/entry/index.php?enid=1034)

do this...
While connected to a power source, try to reset the iPod touch. Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until either the Apple logo or battery symbol appears. If the battery symbol appears, continue to charge iPod touch until it is fully charged. if still doesnt power on try this.. Use the following steps to place your device into recovery mode. If the device is already in recovery mode, you can proceed immediately to step 6.

1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
2. Turn off the device: Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
   • If you cannot turn off the device using the slider, press and hold the Sleep/Wake and Home buttons at the same time. When the device turns off, release the Sleep/Wake and Home buttons.
3. While pressing and holding the Home button, reconnect the USB cable to iPhone. When you reconnect the USB cable to iPhone, the device should power on.
   Note: If you see the screen pictured below, let the device charge for at least ten minutes to ensure the battery has some charge and then start with step 2 again.
4. Continue holding the Home button until you see the "Connect to iTunes" screen. When this screen appears you can release the Home button:
   
5. If necessary, open iTunes. You should see the following "recovery mode" alert:
   
6. Use iTunes to restore the device.

also maybe your unit have been in contact with liquid You can tell if the headphone-jack Liquid Contact Indicator has been triggered by looking directly down into the headphone jack. Use a lighted magnifying glass or angle the iPhone or iPod so light shines down into the headphone jack. At the base of the headphone jack, you should see what is normally a white or silver-colored dot. The dot will become full or half red or pink when the dot has come in contact with water or a liquid containing water. To view the dock-connector indicator on iPhone 3G or iPhone 3GS, use a lighted magnifying glass and hold the device so that you can view the center bottom of the dock-connector housing. A full or partial red dot will appear if the indicator has been triggered.
a feedback would be much appreciated

As the solution is to remove the power lead, remove the battery and hold down the power button it would seem to be an issue with the laptop retaining some residual charge which is preventing the laptop from booting. I've heard of other poeple who have managed to fix this by simply letting the battery run out and then leave it overnight, this will again dissipate any residual charge but is just a much slower way of doing it. Holding the power button down with no power sources attached will dissipate this charge and allow the laptop to boot when a power source is reattached.
ry this for ur laptop.... unplug the power to the pc then take out the battery, then hold the start button on ur laptop for 8-10 seconds,,,once thats done, continue with installing the battery again and power lead.. then simply press start on ur laptop