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How to troublehoot a Portable compouter that will not POST (Power on Self-Test)

Basic troubleshooting for a portable no post is a fairly straight forward process.

  1. Disconnect any external devices and power the system on, see what symptoms occur. Does the system have power? Does it have any Video? Does the system flash LED lights or beep?
  2. If the system is getting power but not starting, and not indicators give any troubleshooting hints, then we simplify the system by removing all items we can and see if we get basic function. Items to remove are Battery, RAM modules, Wireless Cards and the drives. Depending on the design, some of these can't be removed by the user but most can be removed.
  3. If the system will now power on and give some sort of error (LED FLASH, BEEP etc) then Add 1 RAM module back to the system and see if you get video and errors about not being able to boot. If you do, start adding items back to the system one at a time and identify the failing component.
  4. If nothing makes any successful boot, then most likely failure is the mainboard (Motherboard) of the system.

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my dell inspiron 6400 won't start, red light then green light flashes ansd nothing happens, try to take out the battery and putting it back, no results, help


The following troubleshooting guidelines are basic troubleshooting steps. Battery Charging It is recommended to charge the battery while the system is off for faster charge times. Users may notice longer charge times when the system is powered on and running graphics extensive applications.
No POST If the system does not perform a Power On Self Test, there are various things to look for:
  1. Check to ensure that the system has a power light.
  2. If the system has no power light, ensure that it is plugged into AC power. Remove the battery.
  3. If the system has power but is not performing a POST, check to see if the keyboard status lights flash to indicate a successful POST, but no video, or that the keyboard status lights are lit in a sequence indicating a system problem.
bios_leds-1.jpg
  1. With the power off and the system unplugged, remove all CRUs from the system and reconnect that AC adapter to the system and try again.
  2. Run the On Board Diagnostics (OBD).
Video If the LCD on the system shows no display, or has other LCD problems, there are some basic steps to take:
  1. If the LCD is not displaying video or the video is garbled, run the BIST Test.
  2. If the LCD is not displaying any video, connect an external monitor to eliminate a no POST problem. A good image on the external monitor eliminates a video card problem or a POST problem.
  3. Connect an external monitor when possible for all LCD related problems, to help eliminate a software possibility or video card problem.
  4. If the LCD has extremely dim video, attempt to adjust the brightness or connect an AC adapter to eliminate a power management conservation setting set in the BIOS.
  5. If the LCD has lines on the screen, check the system during POST as well as system setup to verify if the lines are present in all modes of operation. Run the BIST Utility.
  6. If the LCD has color problems, run the BIST Utility.
  7. Run the On Board Diagnostics (OBD).

Jul 19, 2011 | Dell Inspiron 6400 Notebook

1 Answer

Blank/black screen when i turn on the laptop


Hi,
Please try the basic troubleshooting steps to resolved the issue:
- Disconnect all external device (example: USB Flash Drive, Printer, external hard drive, etc.) - Turn off the computer by pressing and holding the power button until all lights turned off. - Disconnect the ac adapter from your computer. - Remove the battery, wait for 10 seconds, then connect the battery back. - Plug in the ac adapter. - Turn on the computer.
Hope that helps.

Apr 17, 2011 | Dell Vostro 1510 Laptop

1 Answer

How do I replace the spark plugs?


It is a fairly straight forward process but it is definitely best to be comfortable with what your doing as damage can be done if your not careful and have some know how. here are basic steps and they are the same for all vehicle just makes sure you either mark your plug wires with tape or know which one is which so that you don't mess up the firing order.

http://autorepair.about.com/od/regularmaintenance/ss/plugs_replace.htm
Thank you,
Lee

Dec 05, 2009 | 1999 Chrysler Town & Country

1 Answer

I'm looking for recovery disks for a gateway MX6450 my hard drive crashed.


The system recovery process for your computer is stored on your hard drive. As long as you are trying to reload your hard drive, not replacing it then you can access and run the recovery application without going into windows.

The access the system recovery without going in to window:
Power your computer off.
Disconnect all external devices including printers and pc-cards (external mouse and keyboard can be attached)
Power you system on and watch very carefully for a message that says 'Press F11 to start system recovery'
Press F11 as soon as you see this message.
From her you can go through the recovery process.

Nov 14, 2009 | Gateway Computers & Internet

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