Dell Latitude UY691 User Manual page 72

Light Pattern Problem Description
Memory modules are
detected, but a
memory failure has
occurred.
System board failure
has occurred.
A possible processor
failure has occurred.
A possible graphics
card/video failure has
occurred.
A possible LCD
failure has occurred.
A possible keyboard
failure has occurred.
72
Troubleshooting
Suggested Resolution
• If two or more memory modules are
installed, remove the modules, then
reinstall one module and restart the
computer. If the computer starts
normally, continue to install
additional memory modules (one at a
time) until you have identified a
faulty module or reinstalled all
modules without error (see "Memory"
on page 115).
• If available, install working memory of
the same type into your computer (see
"Memory" on page 115).
• If the problem persists, contact Dell
Support.
Contact Dell Support.
• Reseat the processor (see "Memory"
on page 115).
• If the problem persists, contact Dell
Support.
• Reseat any installed graphics cards.
• If available, install a working graphics
card into your computer.
• If the problem persists, contact Dell
Support.
• Reseat the LCD cable (see your
computer's Service Manual).
• If the problem persists, contact Dell
Support.
• Reseat the keyboard (see "Keyboard"
on page 113).
• If available, connect an external
keyboard.
• If the problem persists, contact Dell
Support.