I turn my cf-30 toughbook on and it tells me operating system not found what do i do

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.

If your Toughbook has an integrated GPS, this may be conflicting with the touchpad or touchscreen driver. You can fix this by running the GPS Registry Patch - SKIPENUM.REG, which is found in the C:\UTIL\GPS\ folder. This file can also be found by following the link below.

If you are using a GPS module that is not integrated, you should contact the manufacturer of the GPS module for a similar patch.

If you are not using a GPS module, or if the above steps do not fix your problem, re-install the touchpad and/or touchscreen drivers.

It could be loose wiring.

1. Take the screen bezel and LCD board off and reseat all the connections. In other words, unplug and plug it in again.

How to: CF-30 toughbook LCD replacement video

2. If that doesn't solve the problem, then you must replace the LCD inverter.

Best Regards,
Embraced Support
Fort Lauderdale Computer repair

Hard drive damaged or unplugged.

Here's a link to CF-27 manuals. There are several depending on the operating system.

https://eww.pavc.panasonic.co.jp/pc/cgi-bin/itn/toughbook/dl01.cgi