What should you do when getting “An unexpected I/O error has occurred” error message?

By   January 7, 2013

“File:\Boot\Bcd
Status:0xc00000e9
Info an unexpected I/O error has occurred.”

unexpected computer error

Many users complained that the computer suddenly stopped working by showing an error telling that “An unexpected I/O error has occurred” while they are working something important on the PC. Due to this error, some unsaved files/folders/projects go like a smoke. But what should you do when getting such an unexpected I/O error message?

The first thing you should do when getting the “An unexpected I/O error has occurred” error message is to restart the computer by using the “Last Known Good Configuration” option that available in all Windows-based operating systems. This feature enables a user to load the last working version of Microsoft Windows and it is great to try it first when facing with an error during startup.

*Restart your computer (or turn it on if it was turned off, duh…)
*Press F8 continuously to load the Advanced Options Menu.
*Then, use the arrow keys to highlight Last Known Good Configuration, and then press ENTER.
*Then the computer will be booted to the last properly -working status.

After successfully getting onto the system, you should check and remove PC viruses from the computer. You should know that PC viruses are typically malicious software that is capable of stealing and destroying all the information in the entire system. Besides, it is able to install itself onto any Windows system without permission. The most common forms of infection are through online downloads of documents and other media files such as song, movie, games downloads etc. Even though your computer is only for daily usage, you will also come to the chance to get “An unexpected I/O error has occurred” errors. To make computer run properly, you have to check and remove all PC viruses.

Sometimes, an old or corrupt dll file will also bring in the appearance of “An unexpected I/O error has occurred” error message. System files are shared by the application to functions correctly all the time. If the one just like wuauclt.exe on your computer does not support the current app version or goes corrupt, an unhandled exception error message will appear sooner or later. This is why you fail to launch an application after the appearance of an.exe error message. Thus, no matter whenever you get the frustrating error message, run the System File Checker to check and replace the missing/corrupted system files immediately.

Fourthly, install all available driver updates for the computers. We know that drivers are those small applications to ensure proper communication between the operation system and the hardware installed on your computer. Whenever which hardware you add to the computer, it will require some corresponding drivers to ensure its proper running. Also, when you update your operating system, these drivers are required to be updated, too. If not, the outdated drivers will bring in kinds of errors to the computer. So, the fourth tip for “An unexpected I/O error has occurred” error is to check and install all available driver updates. By the way, it is highly recommended that you should install all available and recommended Windows service packs.

Finally, you still have to pay attention to the Windows registry errors. Errors within the Windows registry can in many cases bring in kinds of computer errors to the computer even though it is considered to be the most important component of the Windows-based operating system. Registry is a big database that stores all sorts of information and settings about your computer… ranging from your desktop wallpaper to your latest emails. Generally speaking, we can say that it controls the proper running of the computer. However, when an error takes place, you will soon suffer from kinds of errors. If the system cannot locate the required entries to start it up, you will soon suffer from a computer startup error. To maintain the stable running of the PC all the time without “An unexpected I/O error has occurred” error messages, sincerely hope that you can run a registry cleaner utility at least twice a week. This way, all errors will be timely detected and repaired soon.

I think, “An unexpected I/O error has occurred” error message is not a temporary issue but happens when something goes wrong with the PC. To prevent such annoying error messages from happening again and again, it is best that you can perform regular PC maintenance tips in your daily life.