Motherboard Diagnostic Card, also known as a "POST Card" (Power On Self Test), is used to test & diagnose motherboard problems . LCD Display . PC & Desktop Diagnostic Card is a powerful diagnostic tool for technicians and administrators to troubleshoot various problems of compatible Desktops . With this card in hand, you no longer have to go through tedious and time consuming process of trying to figure out what is wrong with your hardware . Desktop Diagnostic Card will indicate exactly what is wrong with your Desktop in just seconds . It can save time and money . If your computer has problems powering up, freezes for long periods of time, suddenly shuts down unexpectedly or shows other signs of hardware problems - this card can diagnose your problem . It can even pinpoint problems you don't even know you have . It is designed to work on Desktop Computers.