ry error; 4 shorts, system clock error; 5 shorts, keyboard error. 7 shorts, real-mode error; 8 short, memory display error; 9 shorts: ROM BIOS checkout error; 1short and 3 shorts memory error.
   WARD BIOS: 1 short, normal start;2 shorts, non fatal error; 1 long 1 short, display error; 1 long 2 shorts: keyboard error. And as for other BIOS, you could refer relevant materials.

2. Software failures easy to get promiscuous: you must differentiate hardware failures from software failures quite definitely; otherwise, it is a waste of your time to use much strength to take your computer to the service center. Next, let’s take a look what software problem causes boot failure.
I. CMOS Setup error: if the hard disk in CMOS Setup is not set correctly, as the computer could not recognize the disk, so the operation system on disk would not start. When screen shows but it still cannot start up, then check up CMOS Setup. If you want the computer to recognize disk correctly, then you could use “IDE HDD Auto Detection” option in CMOS Setup.
II. System file error: Windows needs four files Command.com, IO.sys, Msdos.sys, Drvspace.bin when starts up. If these files are broken, then it could not start even hard disk is recognized. At this moment, you could use file “Sys.com” to recover these files. Boot with startup disc, keyed “Sys c:”.
III. Initialization file error: Windows would read six files "Autoexec.bat","Config.sys"，"System.ini&q