Troubleshooting Amd Crossfirex - AMD R7 240 User Manual

22 Reference
Install a different graphics card. If there are no display issues, then the graphics
•
card in question may be defective.
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.
For more troubleshooting tips, see knowledgebase article 737-22472: How to
Troubleshoot No Display on Re-start Issues.
6.1.1.4 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.
For Windows® operating systems, restart your system in Safe Mode. Use Windows
Device Manager to remove any graphics driver entries under Display Adapters and
restart your system.
Check the system configuration utility for interrupt assignments.
6.1.1.5 During software installation on a Windows® 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.
6.1.1.6 Applications are hanging or there is no display after boot up.
Make certain that the graphics card is installed correctly and is properly connected to
the motherboard and power supply (if applicable).
Verify that the power supply meets the minimum system requirements.

6.1.2 Troubleshooting AMD CrossFireX™

The following are suggested solutions for common AMD CrossFireX™ troubleshooting
issues.
6.1.2.1 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 AMD CrossFireX Web page at
technology/Pages/crossfirex.aspx.
6.1.2.2 Use Graphics Cards with Different Amounts of Memory
In some AMD CrossFireX configurations, graphics cards with different amounts of
memory can by used; however, restarting your computer is required after enabling
AMD CrossFireX. This will cause AMD 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.
AMD Radeon™ R7 240/R7 250 Graphics
sites.amd.com/us/game/
© 2014 Advanced Micro Devices, Inc.