User Guide

The computer does not boot up properly.

Verify that the installation instructions were followed correctly.

Make certain that the graphics card is properly connected to the power supply

and the motherboard.

If using Windows operating system, restart your computer in Safe Mode. For

information on Safe Mode, consult the Windows documentation.

Check the system configuration utility for interrupt assignments.

The computer boots up but there is no display.

Verify that the monitor is connected properly to the computer and a power

supply.

If your motherboard has on-board graphics capabilities, you may need to disable

them. Consult your motherboard documentation for more information.

Note: Some manufacturers do not allow the on-board graphics to be

disabled or to become the secondary display.

During software installation on a PC with the Windows Vista

OS, the screen goes blank

The software is still installing. Wait 20–30 minutes to make sure the software has

finished installing and then restart the computer.

Troubleshooting ATI CrossFireX

The following are suggested solutions for common ATI CrossFireX

troubleshooting issues.

Change Motherboard BIOS Settings

Some motherboards may have a system BIOS option to switch between single

and dual PCIe slot support. The default setting may be single slot support. Refer

to the motherboard’s manual for information to enable dual PCIe slot support.

For more information see the ATI CrossFireX Web page at ati.amd.com/

crossfire.

Use Graphics Cards with Different Amounts of Memory

In some ATI CrossFireX configurations, graphics cards with different amounts of

memory can by used; however, restarting your computer is required after

enabling ATI CrossFireX. This will cause ATI CrossFireX to reduce the amount of

memory on the card with the most amount of memory to match the memory size

of the graphics card with the least amount of memory.

Clicking OK to the memory mismatch error message will restart your computer.

16 Reference