I usually find a failed drive was the cause. We then have to try a new drive.
Hi, I just joined here because I need help with a problem. I am trying to format and reinstall window on my old Dell Optiplex computer that is running Windows 7. I have successfully reinstalled Windows on this computer before. However, this time, I am having problems.
When i try running my Windows 7 disk from the desktop, I get a "windows installer has stopped working" message.
When I boot from the disk, I get a a message on windows boot manager that says the following:
Windows has encountered a problem communicating with a device connected to your computer
This errror can be caused by unplugging a removable storage device suce as an external USBdrive 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 storage is connected and then restart your computer.
If you receive this error message, contact the hardware manufacturer.
Status: 0xc00000e9
Info: An unexpected I/O error has occurred.
After getting this message, I created a bootable USB device to install windows 7. With the USB, I can get just a little further, but I soon get another different error page saying:
Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:
1. Insert your Windows installation disk and restart your computer.
2. Choose your language settings, and then click "Next."
3. Click "Repair your computer."
If you do not have this disk, contact your system administrator or computer manufacturer for assistance.
File: /windows/system32/config/system
Status:0xc0000098
Info: Windows failed to load because the system registry file is missing, or corrupt.
When I boot Windows normally, there is no problem. I wouldn't even be aware there is a problem if I didn't want to reinstall windows. As I said before, I have successfully reinstalled windows on this computer before. The only thing I can think of that might have caused this is that I tried to install a video card on that computer recently (which didn't work) and tried also to replace the hard drive with I slightly bigger hard drive I had laying around (which also didn't work, because that hard drive didn't work anymore.) The video card is removed and the original hard drive is back in.
Solutions that I've tried but didn't work:
As I said above, I tried to boot from a USB in case it was the DVD-ROM that was the problem.
I tried to scan the computer for missing or corrupt windows files using the command prompt command "SFC /SCANNOW". It found no problems.
I error-checked the computer hard drive.
I also defragmented the hard drive although I didn't expect it the solve anything. I was at my wits-end at that point.
I did some searching online for similar problems and solutions.
That's pretty much my case. Just two more quick notes: I'm pretty sure my windows disk isn't the problem, since I only just reinstalled windows on another computer just a few days ago. And two, for any solution that requires me to change BIOS settings, keep in mind that setup in locked and I don't know the password. Its a pretty old computer that I got second hand but so far, I haven't had reason to change BIOS settings.

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