Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Unexpected I/O error has occurred

09 May 2011   #1

Windows 7
Unexpected I/O error has occurred

Everytime I try and start up my Toshiba Satellite laptop I get the following message after a few minutes of a blank screen.

Windows has encountered a problem communicating with a device connected to your computer.

This error can be caused by unplugging a removable storage device such as an external usb drive whilst the device was still in use. etc etc (there were no devices plugged into my laptop)

File: \Boo\BCD
Status: 0xc00000e9
Info: An unexpected I/O error has occurred.

I cannot get any further than this as when I press to continue after a few minutes of a black screen I get the same message. I've tried pressing F8 but it just doesn't work.

Can anyone help!!!

My System SpecsSystem Spec
12 May 2011   #2

Windows 7 Ultimate x86

Hi EJH and welcome to SF
For future reference:
Based on what you wrote, it's either a bad plug somewhere or a damaged device driver or worst case scenario: some faulty hardware.
Since it's a Laptop, please check if all those removable devices (like HDD, CD, DVD etc.) Take everything out (incl. RAM), clean it and carefully reconnect the pieces.
It appears you can't boot into safe mode. So let's see how far you get with this. If you get to a point where you can work safely again, I would recommend to update the Chipset drivers (in case the unresponsive device is part of your North bridge)

My System SpecsSystem Spec

 Unexpected I/O error has occurred

Thread Tools

Similar help and support threads
Thread Forum
Update failed (error: 3)An error occurred while checking for updates:
i just installed google chrome from online installer and then i moved the file using application mover to the HDD.. then i pasted a symlink in "C:\Program Files (x86)\" ... "C:\" is the SSD where the windows and the drivers are installed.... when i turn on chrome everything works file.. but the...
General Discussion
Error 0x8007003B: An unexpected network error occurred
Hello, I recently switched out an older Netgear router for the Netgear WNDR3300. I have a 1TB WD MyBookWorld connected via ethernet to the router. Ever since the router switch I have been having two specifice issues: While uploading videos to Facebook, the video will upload anywhere from...
Network & Sharing
DirectX install error - An internal system error occurred.
I recently re-installed windows and am now trying to install the DirectX End-User Runtimes (June 2010). All goes well, it installs everything, but as it finished I get this error: I have tried redownloading, using other installers and updating my graphics drivers....
Virtualization of ____ Failed. An Unexpected Error Occurred
I finally bypassed the error I was receiving due to a problem with my network sharing, and VMWare Workstation finally started to virtualize my PC. I was extremely happy that it was finally working, so I left it for around a half hour and let it do its work. I came back and the green bar was...
An unexpected I/O error has occurred
I’m trying to install windows 7 onto my HP 6710b laptop. But keep getting same error come up. (this also happens with 2 older hp laptops I have!) From start of boot with disc I get the following... Windows has encountered a problem communicating with a device connected to your computer. ...
Installation & Setup
Unexpected I/O error has occurred
Hey guys. I am afraid that I have screwed up my acer laptop, which had fallen to the ground(I was actually sleepwalking and I somehow knocked it down really hard). Starting up the computer, I got: 0xc00000e9 Unexpected I/O errorhas occured. Windows had encountered a problem communicating with a...
Hardware & Devices

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 06:31.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App