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msahci.sys Troubleshoot and Download

Sometimes Windows system displays error messages regarding corrupted or missing msahci.sys files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent msahci.sys file can therefore effect in failed execution of the started process.

msahci.sys file MS AHCI 1.0 Standard Driver. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of msahci.sys related errors on your device. You can also download msahci.sys file compatible with Windows 7, Windows Vista, Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 7, Windows Vista, Windows Vista, Windows Vista

File info

General information
Filename msahci.sys
File extension SYS
Description MS AHCI 1.0 Standard Driver
Software
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
Details
MIME type application/octet-stream
File type Driver
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)
msahci.sys

There are various types of errors related to msahci.sys file. msahci.sys file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to msahci.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

  • msahci.sys is corrupted
  • msahci.sys cannot be located
  • Runtime Error - msahci.sys
  • msahci.sys file error
  • msahci.sys file cannot be loaded. Module was not found
  • cannot register msahci.sys file:
  • msahci.sys file could not be loaded
  • msahci.sys file doesn't exist

msahci.sys

Error

Application could not be started because msahci.sys file is missing. Reinstall the application to solve the problem.

OK

Problems related to msahci.sys can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing msahci.sys file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

msahci.sys file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with msahci.sys file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to msahci.sys file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of msahci.sys or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to msahci.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the msahci.sys file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the msahci.sys file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the msahci.sys file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace msahci.sys file

The last solution is to manually download and replace msahci.sys file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded msahci.sys file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of msahci.sys file example directory paths.

  • Windows 7: C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_amd64_neutral_aad30bdeec04ea5e\
  • Windows Vista: C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_f8cccc79\
  • Windows Vista: C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_f8cccc79\
  • Windows Vista: C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_f8cccc79\

If the steps did not solve your msahci.sys file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename msahci.sys
System Windows 7
File size 31104 bytes
Date 2010-11-21
File details
MD5 c25f0bafa182cbca2dd3c851c2e75796
SHA1 a3df17daf7e1d64de30ba6736721e75657293201
SHA256 643e158a0948df331807aeaa391f23960362e46c0a0cf6d22a99020eae7b10f8
CRC32 7ff29ee4
Example file location C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_amd64_neutral_aad30bdeec04ea5e\
Filename msahci.sys
System Windows Vista
File size 31288 bytes
Date 2008-01-21
File details
MD5 1ac860612b85d8e85ee257d372e39f4d
SHA1 b5acd29286e2615ec73eee6bcfba3e9d4c63ef68
SHA256 74682cce44bcee31bca286d4f4e53b64caae244155f2b4c8feb6ae7c391ca89d
CRC32 5670d0b4
Example file location C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_f8cccc79\
Filename msahci.sys
System Windows Vista
File size 29656 bytes
Date -0001-11-30
File details
MD5 aa459f2ab3ab603c357ff117cae3d818
SHA1 06b7fdc11224dade13201b6b601ac3b8d0e1ff62
SHA256 c633178227a0c446920908967e6f2f4979be77209c7377b9a41b90f5f31b41b3
CRC32 cff29596
Example file location C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_f8cccc79\
Filename msahci.sys
System Windows Vista
File size 24680 bytes
Date -0001-11-30
File details
MD5 eeadf970795148bfbb1db3abcc89c16b
SHA1 6ff78ca2c3ef0336413eaa5f773274aebe1de9df
SHA256 1f274f1ed64a81257d5281782f60e2701e23873c2256e0aae9981d6c0f862d80
CRC32 2dd0057f
Example file location C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_f8cccc79\