First, first look at a row of machine running status indicator (as shown) in the lower right corner of the machine, now briefly explain the function of each indicator: a digital key lock, press the Fn + F11 (Fumber lock) This lamp is lit, the representation of the numeric keypad is activated. The contrary was not active. 2, Caps Lock, press the Caps Lock key lights up in input uppercase letters state. 3, scroll lock, press the Fn + F12 (Scrollr lock) button lights up, lock screen scrolling. 4, hard drive status indicator, when accessing the hard disk This LED lights up 5, wireless LAN status indicator, 6, laptop battery power adapter status indicator lights up when the wireless LAN is running, the green indicates that the replacement laptop batteries is not installed or the battery has been fully charged, red is charging, not connect the dell laptop AC adapters to power the 7 power status light that does not shine, this lamp has been lit, said the computer up, blinking indicates that the computer is in standby (sleep) state. Does not light when the computer does not boot.

Second, a simple understanding of the meaning of indicator of the state of the computer, then we can know the power indicator light flashes from time to time the computer is in standby, not boot the reasons and solutions below: 1. Power indicator flashes to indicate that the computer is in standby (also known as sleep) state, enters the standby state, there are two ways, one is by manually pressing Fn + Esc key (sleep button) as long as it is sufficient remaining capacity, press the power button on the manual standby can be turned on and return to the standby state before. Another is the low battery and no power AC adapter power supply is connected under windows xp power management settings automatically enter standby mode, because the remaining charge is a serious shortage of automatic standby, probably by checking the battery remaining power can also see out: press the following figure, the PUSH key battery indicator only 20% bright (probably instructed) indicates the remaining battery power is less than 20% in the range of lighting power, automatically enter standby and battery display below 20% know the computer is only because the battery is critically low executed automatically default forced to enter standby mode, then press the power button is not boot. Can intuitively be seen from the following diagram computer power management settings automatically enter standby status and methods: space on the desktop (no icons at) and click the right mouse button and select Properties screen saver power alarm (see below step 1234 ) 2. 5 position marked in the figure above, we can see that, by default, when a serious shortage of battery power and connect the Dell Inspiron 17R N7110 AC adapter to power (about the charge reduced to 3% and when the computer is forced into a standby mode that) , because of power shortages in the state, it is not possible by pressing the power button to boot. The solution is ① Connect the AC adapter to power the standby before the desktop can be restored and then press the power button. ②. Can also connect the AC adapter for asus laptop to power the press the power button to boot the recovery standby before the desktop replacement battery is fully charged. 3 if you do not want to automatically enter standby mode you can modify the default state when the battery is critically low, refer to the following figure: Critical battery alarm projects can choose alerting battery is not recommended to be less than 3%, otherwise possible remaining The power is too low to cause loss of data that needs to be saved, set the alarm operation can not be performed can also modify the Critical battery alarm notification and alarm sounds when the computer will perform shutdown & standby operation. Press the OK button to save the setting is the exit.

Third, in order to better use the computer, it is recommended that as much as possible to use the dell AC adapter power supply or connect the AC adapter power supply when the battery is low timely to avoid because of the lack of electricity led to unexpected data loss.