OPERATING OF KEYBOARD

it migt be turn off. try to press Fn + F1 + F2 + F3 + F4 + F5 + F6 + F7 + F8 + F9 + F10 + F11 + F12 to turn OFF or to turn ON. or you may go to BIOS to turn it on from there.

FN+ F buttons are used as a shortcut. For example, in my laptop, F1 button has a ? icone at the bottom. when a pres Fn+F1, it will launch the help program. F1 to F12 buttons have different shortcuts.

In this order from left to right top row: (take the ast 7)
Esc
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
Prt Screen/ Sys Req
Pause break
Ins
Del
Home
Page up
Page Down]
End

http://img.alibaba.com/photo/346177578/Freeshipping-New-ACER-Aspire-5741G-BLACK-UK-keyboard.jpg

Function keysTo do this Press
Get Help or visit Microsoft Office Online. F1
Move text or graphics. F2
Repeat the last action. F4
Choose the Go To command (Home tab). F5
Go to the next pane or frame. F6
Choose the Spelling command (Review tab). F7
Extend a selection. F8
Update the selected fields. F9
Show KeyTips. F10
Go to the next field. F11
Choose the Save As command (Microsoft Office Button ). F12


SHIFT+Function keyTo do this Press
Start context-sensitive Help or reveal formatting. SHIFT+F1
Copy text. SHIFT+F2
Change the case of letters. SHIFT+F3
Repeat a Find or Go To action. SHIFT+F4
Move to the last change. SHIFT+F5
Go to the previous pane or frame (after pressing F6). SHIFT+F6
Choose the Thesaurus command (Review tab, Proofing group). SHIFT+F7
Shrink a selection. SHIFT+F8
Switch between a field code and its result. SHIFT+F9
Display a shortcut menu. SHIFT+F10
Go to the previous field. SHIFT+F11
Choose the Save command (Microsoft Office Button ). SHIFT+F12


CTRL+Function keyTo do this Press
Choose the Print Preview command (Microsoft Office Button ). CTRL+F2
Cut to the Spike. CTRL+F3
Close the window. CTRL+F4
Go to the next window. CTRL+F6
Insert an empty field. CTRL+F9
Maximize the document window. CTRL+F10
Lock a field. CTRL+F11
Choose the Open command (Microsoft Office Button ). CTRL+F12


CTRL+SHIFT+Function keyTo do this Press
Insert the contents of the Spike. CTRL+SHIFT+F3
Edit a bookmark. CTRL+SHIFT+F5
Go to the previous window. CTRL+SHIFT+F6
Update linked information in an Office Word 2007 source document. CTRL+SHIFT+F7
Extend a selection or block. CTRL+SHIFT+F8, and then press an arrow key
Unlink a field. CTRL+SHIFT+F9
Unlock a field. CTRL+SHIFT+F11
Choose the Print command (Microsoft Office Button ). CTRL+SHIFT+F12


ALT+Function keyTo do this Press
Go to the next field. ALT+F1
Create a new Building Block. ALT+F3
Exit Office Word 2007. ALT+F4
Restore the program window size. ALT+F5
Move from an open dialog box back to the document, for dialog boxes such as Find and Replace that support this behavior. ALT+F6
Find the next misspelling or grammatical error. ALT+F7
Run a macro. ALT+F8
Switch between all field codes and their results. ALT+F9
Maximize the program window. ALT+F10
Display Microsoft Visual Basic code. ALT+F11


ALT+SHIFT+Function keyTo do this Press
Go to the previous field. ALT+SHIFT+F1
Choose the Save command (Microsoft Office Button ). ALT+SHIFT+F2
Display the Research task pane. ALT+SHIFT+F7
Run GOTOBUTTON or MACROBUTTON from the field that displays the field results. ALT+SHIFT+F9
Display a menu or message for a smart tag. ALT+SHIFT+F10


CTRL+ALT+Function keyTo do this Press
Display Microsoft System Information. CTRL+ALT+F1
Choose the Open command (Microsoft Office Button ). CTRL+ALT+F2

Hi,

try anyone from below you will find one

Fn+F1
Fn+F2
Fn+F3
Fn+F4
Fn+F5
Fn+F6
Fn+F7
Fn+F8
Fn+F9
Fn+F10
Fn+F11
Fn+F12

thanks

Fn + F1 Change Display Device. Fn + F2 Wireless Control Fn + F3 Battery information Fn + F4 Decreases brightness on the integrated display only (not on an external monitor). Fn + F5 Increases brightness on the integrated display only (not on an external monitor). Fn + F6 Keyboard backlit(available only if a backlit keyboard is installed) Fn + F7 Mute Fn + F8 Decrease audio Volume. Fn + F9 Increase audio Volume. Fn + F10 CD Previous - Play previous media file. Fn + F11 CD Play/Pause - If there is Audio CD in system, Media player will play music. Fn + F12 CD Next - Play next media file.

GE / Hotpoint / RCA
Oven Fault Codes
Display Condition Remedy
F0 & F1 Failed Thermistor Control Replace ERC
F2 Oven Temp Exceeds 590 with unlocked door High resistance in Sensor, likely a bad sensor
F3 Open Sensor circuit Open (blown) sensor fuse or bad Sensor
F4 Shorted wire or Sensor locate short and correct it
F7-A Function pad button stuck Clean and unstick
F7-B Bad Clock Replace Clock
F8 Electrical component failure Replace ERC
F9 Program with door circuit Check wiring

Frigidaire / Westinghouse / Tappan / Gibson
Oven Fault Codes
Display Condition Remedy
F0 & F1 EOC failure Replace EOC
F2 Oven over heat Defective Sensor or EOC
F3 Oven Sensor Open Replace Sensor
F4 Shorted wire or Sensor locate short and correct it
F5 EOC failure Replace EOC
F6 EOC failure Replace EOC
F7 EOC failure Replace EOC


Maytag / MAYCOR / Magic Chef / Jennair / Admiral
Oven Fault Codes
Display Condition Remedy
F0 Function key shorted or stuck button Clean and unstick button or replace Touch Pad or Clock
F1 Defective Touch Pad or Membrane Replace Touch Pad or Membrane
F2 Oven over heat defective Relay Board or (if present) or defective Sensor
F3 Oven Sensor Open Replace Sensor
F4 Shorted wire or Sensor locate short and correct it or replace Sensor
F5 Hardware, safety circuits disagree Replace Clock
F6 Missing AC (power) signal Check for proper voltage (plug, breaker, etc.)
F7 Function key shorted or stuck button Clean and unstick button or replace Touch Pad or Clock
F8 A/D Warning Replace Clock
F9 Door Lock Warning Check door lock circuit or Replace Clock


Amana / Caloric
Oven Fault Codes
Type with display - glass link ERC
Display Condition Remedy
F0 No Safety Signal Replace adapter board
F1 No Safety Signal Replace ERC
F2 Oven over heat Replace defective Sensor
F3 Oven Sensor Open Replace Sensor
F4 Shorted wire or Sensor locate short and correct it or replace Sensor
F7 Shorted Touch Panel Replace Glass Panel
F9 Door Latch Error Check latch
FF Lock Error Check switch and motor
ERC III - Relay board with separate board/push buttons
F0 Shorted Push Pad Replace Push Pad
F1 Defective ERC Replace ERC
F2 Oven over heat Replace defective Sensor
F3 Oven Sensor Open Check/Replace Sensor
F4 Shorted wire or Sensor locate short and correct it or replace Sensor
F5 Defective ERC Replace ERC
F6 Defective ERC Replace ERC
F7 Shorted or sticking button Clean button or replace touch pad
F8 Defective ERC Replace ERC
F9 Door Latch Error Check latch


The following diagnostic chart Does not apply to Whirlpool 'Y' line products. If the model number contains a Y near the end of the number, DO NOT use this chart.
Whirlpool / KitchenAid / Roper
Oven Fault Codes
Ovens with 4 digit displays
Display Condition Remedy
F0-E0 Analog to Digital failure Disconnect panel for 30 seconds. if error re-appears then replace control
F1-E1 Defective ERC Replace ERC
F2-E0 Shorted Keypad Replace Keypad
F3-E0 Sensor or Sensor Fuse Open Replace Sensor or Fuse
F3-E1 Shorted wire or Sensor locate short and correct it or replace Sensor
F3-E2 Oven over heat Replace Sensor
F3-E3 Cleaning Temp over heat Replace Sensor
F5-E0 Door Error Check Door
F5-E1 Door Latch Check Latch
F5-E2 Door Switch Check Switch
Ovens with 2 Digit Displays
F0 Defective ERC Replace ERC
F1 Defective ERC Replace ERC
F2 Oven over heat Replace defective Sensor
F3 Oven Sensor Open Check/Replace Sensor
F4 Shorted wire or Sensor locate short and correct it or replace Sensor
F5 Defective ERC Replace ERC
F6 Problem with time keeping circuit Reset Time or cooking operation and check for proper ground
F7 Shorted or sticking button Clean button or replace ERC
F8 Defective ERC Replace ERC
F9 Door Latch Error Check latch and latch circuit


If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

You have a faulty keypad. You could probably special order this part from a local appliance parts supply store for 50-60$ or purchase a new microwave.