Cause one: The battery is faulty
Replace the two No. 7 batteries, and if the mouse recovers as before, it may be caused by damage to the primary battery or no power.
Cause two: The power switch is not turned on
The Logitech keyboard has a switch on the back, and the color to be displayed is green to indicate that it is on
Cause three: The keyboard is locked
Press the white pairing key, if there is no response, press the Fn Esc key to switch (different computers may be different), after the lock is lifted, press the white pairing key; Open the Bluetooth in the computer, found that the keyboard is not in its directory, add the Bluetooth device, out a string of numbers, enter in the keyboard, and then press enter, you can.
Cause four: The driver is faulty
1. Download SetPoint Mouse and Keyboard tool of the corresponding device from Logitech official website;
3, click Next, follow the steps to close and then open the keyboard or mouse again;
4. Check whether the device works normally. If yes is selected, Next ends. If it still does not work, select No and repeat step 3.
Cause five: The channel is occupied
Logitech keyboard can be associated with three devices, change the channel to try, that is, F1\/F2\/F3 switch, do not conflict with each other.
Reason 6: The inside of the keyboard is dirty
You can open the keyboard by yourself and clean the inside of the keyboard with anhydrous alcohol; If there is a relatively transparent plastic film inside, please uncover and then clean.
There are two general situations in this case:
1. The power management of the computer enables the energy-saving setting. When the computer detects that the device connected to the U port has no operation for a period of time, it enters the energy-saving mode and stops the power supply of the U port.
2 Wireless keyboard receiver has a problem, resulting in code failure, you can according to the wireless brand's official website code method to try again to code, if the problem is still re-code, that is the receiver is broken.