Ram failure notice on bootup....what's causing....

see
http://www.computerhope.com/issues/ch000394.htm
This is most likely a RAM issue but it may be that your RAM slots on your motherboard have become defective. If the latter, you will need to replace the motherboard, which may mean buying a new computer if a motherboard cannot be found at a reasonable price (try ebay as well Panasonic and other computer dealers)
However you should start by finding out what RAM is in your computer which means opening it if it won't start.
see the reference manual which can be downloaded at http://www.panasonic.com/business/toughbook/computer-support-download-manuals.asp Go to p119 - there you will find a slightly more informative description of what the problem is likely to be (RAM module). I don't know where the RAM modules are situated in your particular model of CF29, you will need to find out. Remove all of them. (see ref manual on how to do this - it looks like the standard method for laptops). Replace one of them in the approved fashion: ensure that it fits well: usually it is easy to tell when this has happened - see other guides for upgrading laptop RAM modules or videos (you tube has many) for this stage if you do not understand the Panasonic ref manual - I found the IBM T40series guide at www.lenovo,com very easy to understand. Now try starting the computer. If it gives the same error, remove and the RAM module and try again. If this doesn't work try the other RAM slot if your computer has one with the same memory module. If that doesn't work repeat the process with the other RAM module [if the computer had one]. In this fashion you should be able to determine whether and which RAM module is defective or if it is one of the slots on the motherboard. If there is only one module and slot, you will need to try reinserting the RAM and if that doesn't work using another known good stick of RAM of the correct type (not all RAM sticks of seemingly the correct spec, will work though: best use a reputable brand). This will tell you whether it's likely to be the original RAM or the motherboard, or just that the RAM had become improperly seated.

While carrying these operations the computer should be powered down and have the battery removed. Observe anti static precautions and do not force anything.

Good luck

17.January.2015

If you screen was dimming on your Toughbook, then try to
attach an external VGA monitor when the Toughbook is
turned off, then power on the external monitor,
then power-on the external screen.

If the external screen works, then you may have a bad
inverter if you TB is 2007 or before.

If the TB is 2008 or 2009 or later, then probably your screen
is NOT LCD with an inverter but instead LED. Which means
that you have to replace the entire LED screen.

Good Luck!
Regards,
Richard - Montreal Based
Panasonic Canada Toughbook Authorized Dealer since 1989

reformat the had drive and install a fresh copy of OS from the compact disc.... once the installation is complete, boot up the computer again... if it works, then every thing is perfect....you can go ahead and install the drivers for your devices in the compter...
please clarify if you have any further troubles in installing the OS in your computer...

Is there any chance the video output is switched to feed the rear VGA connector? ie the screen is black due the video being routed away from the screen. Try hitting F5 key.
Can you hit the Delete key to try and enter the bIOS screen? (it may be another key such as F1 or F2. See your Toughbook manual)
Can you have someone make you a bootable USB thumb drive and try booting up with that?
Its also possible that the hard drive has failed, but usually the BIOS POST check will initiate and indicate a failed hard drive or bad RAM etc
Can you remove the 2.5 inch hard drive? Usually its accessible under a removable panel under the laptop.
Feel free to ask more questions.
Cheers,
Steve
PS have you tried the discussion forums on the Panasonic website?

I think your actually having issues getting it to run on the toughbook because it uses different drivers for everything from the Acer computer. If you press F8 while booting up you can choose the option "Disable automatic restart (of system errors or something)". Then when the machine boots up you should get a blue screen giving you an error code like "IRQ_EQUAL_TO_OR_GREATER_X Error: 0x0000005f. You could try to see what the message is trying to tell you to resolve it but the error msg would likely point to the driver that its trying to load that's most likely different from the toughbook you have. I'd suggest getting an external cdrom/dvdrom and install windows from a disc onto the toughbooks hd while its in that toughbook machine.

I don't thank they have it out for tablet yet. Wait a bit and they should.

You can go to a website like kingston.com; crucial.com; tigerdirect.com; newegg.com & use their memory finders to find out what type of RAM your computer uses & what they have available for purchase. Hope this helps & please rate this solution as fixya. Thanks.

You could attempt to boot to safe mode, and run the Start> System Recovery > PC Recovery Application.

Otherwise, I'd boot to safe mode, select start, run, type: msconfig, select the startup tab, remove any unwanted startup items that may be causing the system crash.

Hope this helps.

I solved this on a toughbook. The numlock was activating while windows started even with the regkey set to have it off.
(http://support.microsoft.com/kb/154529/en-us)

All I had to do was restarting the PC waiting for windows to activate the numlock again during the shutdown process and then hitting the numlock once before windows was done.

Next time the Toughbook started the Numlock kept off!

Hi,
I fixed mine finally!!! I ordered a cable kit and replaced the cable from the display to the motherboard (I actualy replaced them all but that one was the culprit.) Also, I learned that if you put the cable in backwards :) into the motherboard, it will appear very dim as it did with the bad cable. I believe that this is because the backlight inverter is not active, which in other posts here, may mean that the inverter is bad. Just a thought...