Error code 14.3 Fujitsu is an error that is generated when there are problems with communications between the hard drive and other components of a Fujitsu laptop. This can occur due to corrupted data on the hard drive, faulty cables connecting the components, or hardware failure in one of the computer's internal components. In some cases, this error may also be caused by outdated drivers or malicious software installed on your system. To resolve Error Code 14.3 Fujitsu, you should first try running a disk utility program to check for errors and corrupt files on your hard drive; if any errors are found they must be fixed before continuing troubleshooting. You should then check all cables connected to your device for signs of damage and replace any damaged cords as needed; additionally, ensure that all drivers are up-to-date and run a scan with anti-malware software to make sure no malicious programs have been installed on your machine without your knowledge.