19then run power-on test. While the test are running, the BIOS will alarm beeps oradditional message will appear on the screen.If you do not see any thing within 30 seconds from the time you turn on the power.The system may have failed on power-on test. Recheck your jumper settings andconnections or call your retailer for assistance.Beep MeaningOne short beep when displaying logo No error during POSTLong beeps in an endless loop No DRAM install or detectedOne long beep followed by three shortbeepsVideo card not found or video card memorybadHigh frequency beeps when system isworkingCPU overheatedSystem running at a lower frequency6. During power-on, press key to enter BIOS setup. Follow the instructions inBIOS SETUP.7. Power off your computer: You must first exit or shut down your operating systembefore switch off the power switch. For ATX power supply, you can press ATX powerswitching after exiting or shutting down your operating system. If you use Windows 9X,click “Start” button, click “Shut down” and then click “Shut down the computer?”The power supply should turn off after windows shut down.Chapter 3Introducing BIOSThe BIOS is a program located on a Flash Memory on the motherboard. This program is abridge between motherboard and operating system. When you start the computer, the BIOSprogram gain control. The BIOS first operates an auto-diagnostic test called POST (power onself test) for all the necessary hardware, it detects the entire hardware device and configuresthe parameters of the hardware synchronization. Only when these tasks are completed doneit gives up control of the computer to operating system (OS). Since the BIOS is the onlychannel for hardware and software to communicate, it is the key factor for system stability,and in ensuring that your system performance as its best.In the BIOS Setup main menu of Figure 3-1, you can see several options. We will explainthese options step by step in the following pages of this chapter, but let us first see a shortdescription of the function keys you may use here:• Press to quit the BIOS Setup.
