Trblshooting dead Precision M50 Notebook

All at once, my Precision M50 will not power up via AC or Battery (no
lights, noise, anything...). Anyone have any ideas on where I should
start trblshooting this (yes, the batteries and adapter are
functional)? Anyone ever heard of this before?
TIA,
Tony

 

You can start by removing the memory and see if you get any error beeps ,
same with removing the HDD but in reality a no boot no post situation
usually indicates its a motherboard problem, and unless you really know what
your doing then the only way forward is with a new motherboard

 

Time to shp for a new board...


Thanks for the info!

 

First at all you must be sure that your AC adapter works. Something is
defective and laptop continues working until the batery is discharged.
Later you must be sure that there is no lights at all. Look the Tree
status leds (Bloq num, Caps lock and scroll lock) while you are
pressing the power button.
0-1-1 means memory failure
0-1-0 means Processor failure or MB defective
1-1-1 usually is the MB defective

Other possibility is to try power on the laptop without the memory
door. There was an old issue with defectives memory doors that makes
the laptop fail to post.
Also you must try to power on the M50 without bay modules inserted
(sometimes a defective bay could be the cause of No POST)
Other possibility... the modem... you must to disconnect it physically
(not only unplugging the internal signal cable. To do it there is a
single screw in one corner of the modem that attach it to the
Motherboard.
Regards

 

FWIW I've had an Inspiron 5000 for about 5yrs. About a year ago and
again a month ago it would not power up. Press the power button -
nothing. Reseated everything, tried another good battery and AC
adapter - nothing. Pressed the power button at least 50, maybe a
hundred times - and then all of a sudden it powered up and has been
fine since.