SOURCE: Dell D600 will not power on
I have one that does that periodically. Probably not the highest tech solution but I give the keyboard a robust slap just to the right of centre & this always does the trick. (Originally tried re-seating memory and CPU to no avail and in frustration gave it a slap & it worked!)
SOURCE: can't get num lock to work on Dell Inspiron 6400
The 5th key from the right on the top row of your keyboard should is the Num Lock Key...
SOURCE: Dell Inspiron 6400 won't power up...
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
SOURCE: Dell latitude D505 laptop volume
use the volume controller from
start. all programes, accessories, entertainment, volume control
SOURCE: how to turn off the number lock button
Just press Fn+F11. An icon of a Padlock with a number 9 must be unlit for you to use the keyboard normally. If you need to activate the numeric keypad again, just press Fn+F11 again.
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