A Brief Introduction to Power-On Self Test in ASUS ux31e

ASUS UX31E Ultrabook 7.4V 6840mAh laptop battery

When you turn ON the ASUS, it will first run through a series of software-controlled diagnostic tests called the Power-OnSelf Test (POST). The software that controls the POST is installed as a permanent part of the Notebook PC's architecture. The POST includes a record of the Notebook PC's hardware configuration,which is used to make a diagnostic check of the system. This record is created by using the BIOS Setup program. If the POST discovers a difference between the record and the existing hardware, it will display a message on the screen prompting you to correct the conflict by running BIOS Setup. In most cases the record should be correct when you receive the Notebook PC. When the test is finished,you may get a message reporting "No operating system found" if the hard disk was not preloaded with an operating system. This indicates that the hard disk is correctly detected and ready for the installation of a new operating system.