I have no power to my Dell Inspiron 9400. I am using a power adaptor whicih I have verified to be workign correctly. I have held the power button down for more than 20 secs, but there is no indication of any power at all. Any Ideas?

There are two possible causes for this issue:
1) Your dell 9400 charger is malfunction
2) Your laptop dc power jack is loose or dead

Possible troubleshooting step:
1) Borrow a compatible dell charger to plug in your laptop, if it works without any issue, it means your dell inspiron 9400 adapter need to be replaced.

2) If the compatible dell 9400 charger won't work normally, the problem may lie in your dc power jack.

Hope this will help.

there is some issue with ur display drivers try to uninstall it from safemode and again reinstall it back??

If the computer is connected to an electrical outlet, the light operates as follows:

• Solid green: The battery is charging.
  
  
• Flashing green: The battery is almost fully charged.
  
  

If the computer is running on a battery, the light operates as follows:

• Off: The battery is adequately charged (or the computer is turned off).
  
  
• Flashing orange: The battery charge is low.
  
  
• Solid orange: The battery charge is critically low.

Looks like the AC adaptor is faulty.

Does the laptop power up just no charge the battery? If the laptop does not power on then you may have a bad power supply in the unit. If it does power up than you most likely have a bad battery connector of blown fuse on the motherboard. The flashing of the BIOS is done with a bootable cd or floppy but this will not keep the new battery from charging. The reason Dell states that you need at least 10% battery to flash a BIOS is because if your AC power goes out while you are doing a BIOS upgrade and you don't have battery power the BIOS will be incomplete and your laptop will not boot again without replacing the motherboard.

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.

you may have damaged the screen in which case theres not much more you can do then replace it.if its a new labtop it may be still under warrenty in which case get back to dell.

sounds like bad motherboard/power supply. Just to be sure though have you upgraded the ram? If you have more then one memory chip try siwtching out each one and seeing if it's boot farther. It's possible a dimm went bad or the port it's in went bad. Otherwise motherboard/powersupply

Simply use the external video port. It may require an adapter depending on the monitor you plan to use.

i suggest that you should replace the battery because batterey may be faulty take it down to your nearest pc repair shop

bright ness buttons are indicted witha sun like mark . they r usaly used with fn keys look for that keys