Pan. toughbook c-29 light will turn/flash on but hd won't startup or screen
Does any one know what might be the problem laptop no longer will turn on by opening, then when I hit the on switch (mp) light will turn on then the other 5 lights will flash once, one after the other, from right to left in a snap second (mp) light comes back on and stays on. HD won't start up, screen won't turn on and batt. won't charge up, but light stays on (red-orange). tested power supply @ 15+V.
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Re: pan. toughbook c-29 light will turn/flash on but hd...
Sounds like a capacitor issue with the boards secondary supply side to me, recommend you dis assymble and check capacitors with low esr meter to determine which way to start trouble shooting power delivery issue. Obviously your getting power to the plug but have you LOAD tested the power supply? Try another one to see?
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Press "F2" on your keyboard when you see the Panasonic logo appear on the screen. You will immediately be prompted to enter your Panasonic Toughbook Cf-29 BIOS password. Type the word "Biostar" into the password prompt. This is your Panasonic Toughbook Cf-29 backdoor BIOS password. Press the "Enter" key to unlock your Panasonic Toughbook Cf-29 BIOS.
On ALL Panasonic Toughbook Models,
if the screen stays dark I would shut-off the
Toughbook and connect an external monitor
to the VGA port (15-pin female connector),
which is usually BLUE in color.
Make sure the monitor is ON first, then
turn ON the Toughbook.
If the monitor comes on then your problem
is the backlight or possibly the inverter of the
If no image is shown on the external monitor
and the screen stays dark and you cannot
hear any startup (ie. Windows) sound, then
your video card may be defective. Very few
Toughbooks fail this way since they are
normally very very relaible but it can happen.
Richard - Montreal Based
Panasonic Canada Toughbook Authorized Dealer since 1989
if you done some additional hardware to you pc then you must remove it, could posibly caused that windows hang-up.
1. please check and validate your memory condition.
2. maybe your OS was corrupted and need to re-install or reformat the HDD.