T r o u b l e s h o o t i n g
4/4 LS/VS550 OWNER’S HANDBOOK
Monitor
If there is no display check that the monitor is turned on, and the
brightness and contrast controls are not too low.
If you have fitted a new video controller expansion card and
subsequently encounter problems try disabling the on-board video
controller by removing a jumper from the motherboard. See the
chapter ‘System motherboard’ for more information.
Expansion cards
If an expansion card does not work, check that all internal cables are
securely connected, that the card is configured correctly, that its use
of system resources does not conflict another card or motherboard
component, and that legacy resources (if it is an ISA card) are
properly declared in the BIOS setup utility. Check also that the
software which drives or uses the card is correctly configured. Check
in the chapter, ‘Expansion Cards’ for information, and in ‘System
BIOS and Setup’ to see whether your chosen settings are useable.
System BIOS
Check finally the system BIOS to ensure that it has not been
disturbed from the original settings. If the settings appear to have
altered, there may be a fault with the CMOS battery. See ‘System
motherboard’ and ‘System BIOS and Setup’.
The system’s disk drives
Refer also to Chapter 2, ‘Using your computer’.
Floppy disk drive
If you have problems accessing a diskette or floppy disk, check that
it is inserted correctly, that it has been correctly formatted, that it is
not write-protected, and that the permissions assigned by the BIOS
allow the intended access. Some application software also may not
allow you to read or write to floppy disks during certain other
operations, or until you are about to exit the programme.
