When I power on my C 400 Latitude note book, it does not show display. From top panel where ON button is fix, there are 3 LED indicators, LED 4 (Lock "A") blinks 10 or more times but note book does not display. after 15 sec it automatically power off.
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Re: C 400 Latitude display problem
That LOCK A sysmbol is the caps lock.
Most likely its due to hardware failure. Be sure the battery is holding a charge and the power adapter is working.
It could be bad Ram. Usually when there is nothing at all but a quick light on and off and nothing, its due to motherboard issues or hardware plugged into it. Try removing any CD drives or add in devices.
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Screen does not come ON or not showing any display even the power LED is lit. Sometimes it is due to the laptop was not shutdown properly or the battery was drained or laptop was left idle. This is a simple solution that may fix the problem. If the power LED is lit, turn off the NB, remove all the power sources (battery and charger). Without the power sources, hold the power button for 10 secs and put the power sources back and turn ON the laptop. If this doesn't resolve the problem, it needs to be checked for possible Motherboard problem.
Press the [Menu] button on the Control Panel, until Reports is displayed on the top line of the Display Screen. The Phone Book menu item will be displayed on the bottom line.
Press the right or left arrow button to scroll until the report or list you want to print is displayed on the bottom line.
Phone Book: Phonebook list
Sent Report: Sent fax report
RCV Report: Received fax report
System Data: System data list
Scheduled Jobs: Scheduled job information
MSG Confirm: Message confirmation
Junk Fax List: Junk fax number list
Press [Enter] to print the selected information.
Your machine can print reports containing useful information. The following reports are available:
Phonebook List: This list shows all of the numbers currently stored in the machine's memory as Speed Dial and Group Dial numbers. You can print this phonebook list using the [Phonebook] button.
Sent Fax Repor: This report shows information of the faxes you recently sent.
Received Fax Report: This report shows information of the faxes you recently received.
System Data List: This list shows the status of the user-selectable options. You may print this list to confirm your changes after changing any settings.
Scheduled Job Information: This list shows the document currently stored for Delayed faxes or Toll Save faxes. The list shows the starting time and type of operation.
Message Confirmation: This report shows the fax number, the number of pages, the elapsed time of the job, the communication mode, and the communication results. You can set up your machine to automatically print the message confirmation report after each fax job.
Junk Fax Number List: This list shows up to 10 fax numbers specified as the junk fax numbers by using the Junk Fax Setup menu. When the Junk Fax Barrier feature is turned on, incoming faxes from those numbers will be blocked. This feature recognizes the last 6 digits of the fax number set as a remote fax machine’s ID.
Multi-Communication Report: This report is printed automatically after sending documents from more than one location.
Power Failure Report: This report is printed out automatically when power is restored after a power failure, if any data loss occurs due to the power failure.
NOTE: The lists you have set to automatically print out will not print out when there is no paper loaded or a paper jam has occurred.
press the fn key on laptop hold it down and then press the power key on the laptop. once u see any display on the screen you will get some tests running on the screen. The system will show you the error message which u need to note down. else you can do a Flea Power on your laptop. Remove the adapter and the battery and then press the power button and hold it down for 30 seconds then connect the battery and adapter back and try to turn on the laptop. See if the magic works for you
Try taking out battery and plug in power. If it works, battery is faulty. If not, Try taking out your hard disk plug in power, if it works, hard disk is faulty. If not, Try taking out memory card, if there's a sound, memory card faulty. If no sound, it's your motherboard that is causing the error.
Note: If machine is under warranty no need to pay for the repairs.
This is a fixing error.But it can be caused by a power dip aswell.
Try to reset it,if the error presist then there is a problem on the fixing.
To reset-Switch the machine off,open the front cover,switch the machine on again.If it shows "open cover",press the system menu counter button.press the arrow up ones to display system settings,hold the start and # button in and press "ok"or"set"
go down with the arrows untill maintenance mode is display,press ok,then enter the number 163 and press ok.
set it for exeuteand press ok.
Then the error will be cleared.