A Few Tips to Fix Sapphire HD 7770 Errors


There are two common errors related to Sapphire HD 7770 that you might get, both of which are discussed in detail in this post.

Screenshot No AMD graphics driver installed or is not functioning properly.

Fix Sapphire HD 7770 Error 1:

You might get the following error message:

“No AMD graphics driver installed or is not functioning properly. Please install the AMD driver appropriate for your AMD software.”

The error could occur because of different reasons, the most common reason being outdated drivers. You can solve the error, by downloading the latest drivers from the AMD website.

However, if you already have the latest drivers or if the problem persists after you’ve updated the drivers, try disabling “Digital Signature Required”, mandatory by default on Windows 7 64-bit and Windows Vista 64-bit operating systems.

To disable it, log in as an administrator and perform these steps:

  1. Click Start
  2. Then, Type command prompt in the Start Search box
  3. Now, Type “bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS” and press Enter
  4. Type “bcdedit.exe -set TESTSIGNING ON” and press Enter
  5. Restart Windows

Fix Sapphire HD 7770 Error 2 (BSOD):

The other common error message that Windows users have reported receiving is this one:

“STOP: 0x000000116 blue screen (BSOD) error”

You are likely to receive this error if the video card driver installed on your computer is outdated or corrupt.

To resolve the issue, download the latest graphic drivers. Next, perform these steps:

  1. Click the Windows icon in the taskbar, type device manager in the Start Search box, and then press Enter
  2. Locate Display Adapter in the Device Manager window and then click the > sign against it to expand it.
  3. Right click Sapphire HD 7770 graphics card and then choose Update Driver Software
  4. In the Update Driver Software dialog box, click the “Browse my computer for software driver” option.
  5. Click Next
  6. Go to the folder containing the latest graphic card drivers and install them
  7. Reboot Windows

In case the problem persists, go the Device Manager and uninstall each and every device that is listed below Display Adapters. When you do so, Windows is forced to detect the video card and install it. Restart Windows in the Safe Mode in case you are not able to boot it normally because of the Blue Screen of Death error.

Here are the steps to uninstall the Sapphire graphics card.

  1. Click the Windows icon in the taskbar, type device manager in the Start Search box, and then press Enter
  2. Expand Display Adapter by clicking the > sign against it
  3. Right click Sapphire HD 7770 graphics card and then click Uninstall
  4. Restart Windows

Upon restart, your system will detect the graphics card as a piece of new hardware and new hardware installation wizard will open. Choose the manual option to install the drivers and restart windows again after installing them.

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