Acer AT350 F2 Series, Service Manual, Page: 126 / 232

5 System troubleshooting
112
• Make sure that you have properly installed system-compliant memory
modules, and that they are populated according to the system
guidelines.
• Make sure that you have installed system compliant processors, and
that they are populated according to the system guidelines.
If you are using an add-in video controller card, do the following:
1 Verify that the display monitor works using the onboard video
controller.
2 Verify that the add-in video controller card is fully seated in its slot.
3 Reboot the system for the changes to take effect.
4 If there are still no characters on the screen after you reboot the
system, reboot it again.
Take note of the beep codes emitted during POST. This information
may be required if you seek technical assistance.
If POST does not emit any beep code and characters still do not
appear, the display monitor or the video controller may be defective.
Contact your local Acer representative or authorized dealer for
technical assistance.