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I have Dell inspiron n4050 laptop. Pre loaded with windows 7 basic (64-bit). I want to install windows 8 but it gives error before setup starts. Error says..


There was a problem with a device connected to your PC

An unexpected I/O error has occurred.

Error code: 0xc00000e9

This problem can happen when a removable storage device is removed while it's in use or is failing. Properly connecting any removable storage and resatring your PC may fix this problem.

No device connected to PC at this stage. I'm installing windows 8 pro from DVD drive. I've tweak BIOS but not succeeded (Restore all default BIOS settings).

Can anyone tell me how to solve this error?

Thanks in advance...

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Ensure all external devices are unplugged, and confirm there's no SD card in the card reader slot. If that doesn't help, try transferring Win8 Setup to a USB stick and use that instead. As a bonus should be much faster than the DVD too. – Karan Mar 13 '13 at 2:26
up vote 0 down vote accepted

it's likely the disk you are installing from is bad/scratched or the CD/DVD drive is failing/going bad. You will find that some DVD/CD drives are more "picky" than others... if you have a spare, can borrow a friends for the install, or an external USB one, give it a try.

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Installing via USB done the thing... Thanks for the answer.. – Never Quit Apr 7 '13 at 17:44

I had the same problem trying to install Windows 7 from a DVD where I had burned an ISO of the Windows 7 installation (downloaded directly from Microsoft as an ISO). I was trying to install Windows onto a brand new HDD.

The computer kept giving me that exact same error - there was nothing plugged in at all (I even unplugged the keyboard).

Turns out it was the installation disk. I tried a different copy of the disk and it worked just fine. So it was some problem with the way the ISO was written to disk (in my case).

Therefore - SnakeDoc had the answer first. I am just adding my answer by way of confirmation.

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