It is essential that every computer owner use computer diagnostics tools to prevent blue screen errors, system failure, slow booting, start up errors, hard disk crash, and trouble shooting other potential problems. Most of the laptop diagnostic technology is easy to install and run. Some of these tools are as available as free downloads; however, the paid tools seem to be more effective at diagnosing and repairing computer issues. The best laptop diagnostics and repair technology can be used to fix email, software, windows registry, hardware, networks, and security issues. These tools can retrieve a lost partition and lost data, repair files, remove damaged files, and get rid of spyware. They will restore the laptop system to its original settings.