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Windows failed to start

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Posted 19 July 2010 - 06:11 PM

Toshiba Satellite a305-s6905 running Vista Home Premium

at boot, it takes a bit and then:

Windows failed to load because the system registry file is missing or corrupt.
I used f8 to get to boot menu and choose "repair" and was meet with the following:
windows encountered a problem communicating with a device connected to your computer
This error can be caused by unplugging a removable storage devie such as an external USB drive while the device is in use, or by faulty hardware such as a hard drive or cd rom drive that is failing. make sure any removable storgae is properly connected and then restart you computer.

If you continue to receive this error message contact the hardware manufacturer.

Status: 0xc00000e9
INFO: an unexpected I/O error has occurred.

i have to hard reboot to get out of that screen.

Rebooted and tried safemode:
loading windows files
please wait
(new screen) windows is loading files:

screen change:
Windows failed to start a recent hardware or software change might be the cause. To fix the problem:
1. insert your windows disk and restart ( dont have one of those)
2.choose language
3 click repair

If you do not have this disk contact your system administrator or computer manufacturer for assistance.

File: \windows\system32\config\system

Status: 0xc00000e9

Info: Windows failed to load because the system registry file is missing, or corrupt.

enter to continue and it starts the process over again
Machine is 3 months out of warranty.
Is this a bad HDD ?

I dont have any restore media disks.

how do i resolve this?

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#2 cryptodan


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Posted 20 July 2010 - 03:25 AM

Try the following:

How to Test your RAM

Guide Overview

The purpose of this guide is to teach you how to check whether your system's RAM (Ramdom Access Memory) is working properly. Bad RAM can lead to a whole host of problems, often which do not appear to have a single cause -- appearing as systemwide glitches, blue screens, and other system trouble. MemTest86+ provides a very good detection mechanism for failed RAM, and is about as good a test you get short of actually replacing the module itself.

Tools Needed
Please perform these steps from a separate, working, machine.Perform these steps on the problem machine.
  • Put your CD in the drive and configure your machine to boot to the CD. This is different on all machines, but it's usually by pressing F12 or F10 as your system boots, and selecting either "CDROM" or your cdrom drive. If you are unable to force a CDRom boot, reply with the make and model of your machine and I should be able to get you exact instructions.
  • If you've done it correctly, MemTest86+ will start to run automaticly, as shown below:
    Posted Image
  • If you want to be reasonably your RAM is OK, then allow MemTest to run until you see this message:
    Posted Image

    On the other hand, if you want to be completely sure your RAM is OK, allow MemTest to run overnight. Memtest will run forever until power is pulled on the machine.
  • Check the MemTest screen for any reported errors. Errors will appear as RED warnings at the bottom of the screen, similar to the following screenshot:
    Posted Image
  • Hard-Reset the machine, removing the MemTest disk in the process.
If you didn't get an error screen, Congratulations! :huh:

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