Question about Panasonic Toughbook CF-51 Notebook
My laptop will not start up. I was using the laptop when it all of a sudden shut off. It went from running to black in an instant, no shut down process, nothing. The battery was fine, and it was plugged in aswell. I cannot start up the computer now at all. This is what happens:
I push the button
The lights on the front of the laptop come on
There is a strange whirring noise (not loud, just not its norm)
The screen comes on for a split second
it turns off again.
all of this happens in about 4 seconds time.
The results are the same plugged in, with the battery in or out, with the hard drive in or out. Same noise, same result. Is it the fan, or is it the motherboard? This hasnt happened before and the laptop has never been alowed to over heat, had anything spilled on it, or been dropped. Sugestions?
I was able to fix this problem by reseating the componets inside (CPU & RAM) and resetting CMOS (pulled the batt for 10 sec.)
I had the same problem. Remove HD and Batt. Pop the cover over the speakers & power button off. Slide the keyboard up and out, fold over out of the way. Pull the connector from the cmos battery for 10 sec then plug back in (2 wire conn next to speaker wire connector. Unscrew the heatsink on the cpu, remove. Wipe the thermal compound off. Flip the latch down and lift the CPU slightly out of socket, put it back in socket and lock retain latch. Apply new thermal compound install heatsink. Put back together, boot up. You will get an error the first time because the bios has been changed. You can hit F2 for setup to change time and date, save changes exit.
Hope that helps.
Posted on Dec 03, 2008
The sound you here would be the fan. Before opening the case check your warranty -the Toughbook is an excellent laptop so Panasonic may help you. If you have never opened a laptop you should get the remove/replace procedures, keep track of every screw as they vary in length and use an esd wriststrap so you don't make things worse. One possibility is that something got sucked into the fan which would change the rpm of the fan which would signal the computer to shut down. It may be worth trying to use a canned air to blast into the fan exhaust in case there is something in there. Good luck with this and repost if you need more help or info. ~Steve Medley
Posted on Nov 10, 2008
A lot of folks don't realize that laptops get dust and dirt build up in the heatsink fins causing overheating and motherboard damage. In this case, I would blow out all the vents w/ an air compressor (no canned air doesn't have enough pressure) and re-seat the RAM as well as the processor. The whirring very well maybe a bad fan for the CPU or the video card and can also be the reason it's not booting. Sometimes laptops have sensors and when a fan isn't running at a proper speed it will halt the system.
Posted on Nov 10, 2008
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Posted on Jan 02, 2017
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