Screen wont turn on , i have a inspiron 6400 .. I rang dell & my extra 3yr warranty ran out just 6 weeks ago & * They WONT HELP*

Go to the settings which is the gear in the right hand corner, then click unlock.

Every new Dell computer comes with a ONE-YEAR warranty.
Contact Dell, via telephone, and they will trouble-shoot your problem,
and will repair/replace any parts, to fix your problem.

No charge, during the first 12 months of ownership.

change your installation disc this can fix you problem

your smps is not working just change it and it's works

Sounds like a bad drive but it may still have the data on it (hand it over to a professional).
Next time, don't forget to do your backups so you don't have to worry.

JOAT

Here are my recommendations for this issue:

1. Reseat the battery.
2. Remove All External Components
3. Check the battery connectors on the battery and the system. Examine the connector on the battery and the system. Make sure that there is no physical damage and that it is clear of debris.
4. Remove All External Components
5. Try a known-good battery in the system, if available.

Depends on your use. The 9 cell will hold a charge for about 2 hours, depending on your configuration and the 12 I believe is 3-4.

FIRST REPLACE YOUR BATTERY, THEN ALSO CHECK VIRUS WITH AN UPDATED VIRUS CLEANER.

try this with battery removed first..

plug in ac power, no battery,

then when turning on machine, press F8 to go to safe mode(pick the top option)

see how that works forya

Most probably the seating of the processor on the motherboard is not proper
check this site and mount the processor properly
http://support.dell.com/support/edocs/systems/ins6400/en/sm/cpu.htm#wp1084976