DLL Suite - Fix SYS Errors

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How To Fix SYS Errors

BSOD (blue screen of death) can be Resolved by Fixing SYS Errors

SYS errors occur due to old drivers, corrupt Windows registry and virus infection. SYS errors are the common causes of blue screen of death (BSOD). This article will show you the detailed instructions to fix SYS errors.

Note: The most common method to fix SYS errors is upgrade drivers. Before you upgrade drivers, we strongly recommend that you perform a virus/spyware scan with the latest security software to make sure that your computer is virus free.

The company logo in the Solutions section of the chart below means that you should download the latest drivers from their websites and then install them to upgrade your drivers.

DLL Suite icon means that you can use DLL Suite to fix SYS errors for your Windows 7, Windows Vista and Windows XP PCs, both 32-bit and 64-bit operating systems.

How to replace SYS files?

Note: This section is used for the manual SYS repair performed by DLL Suite.

For automatic SYS repair, please see How to automatically fix DLL errors.

  • Start DLL Suite
  • Choose .SYS option before you click Start Scan button
  • Choose any specific .sys file and then click More Information when the scan is complete
  • You will reach a web page where you can download .sys file
  • Save the file to C:\Windows\System32\Drivers

  • How to re-register SYS files?

    Once the .sys files are replaced, you need to re-register them to apply the changes, for the detailed steps, please see below:

  • Click Start, Run
  • Type cmd, press Enter
  • Type regsvr32 .sys name, press Enter (E.g. the .sys name is ks.sys, you need to type regsvr32 ks.sys)
  • Restart your computer
  • Note: If you choose to automatically fix SYS errors, you don't need to do that.

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