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: Freshly built PC - 0xc00000e9 error

12 Sep 2013   #1

Windows 7 Ultimate 64-bit
Freshly built PC - 0xc00000e9 error

So, today I got all my parts to assemble my very first computer. After the assembling job, I moved on to the Windows 7 OS installation. I was happy it was ending, but I got a surprise

"Unexpected I/O error"

It tells me things about damaged hardware but the only hardware plugged in to my computer are:
Western Digital Caviar Black 1TB HDD and an ASUS DVD writer, nothing else. These hardware are perfectly recognized by the BIOS, so I really don't know what the issue is. I even tried it with Windows XP, but now I get a 0x000007b (or something similar to that). There is no GPU installed yet, cuz I haven't got it yet (I assume I can use the intel hd 4600 onboard one since the HDMI screen pops up on my TV)

I've checked the HDD and there is no problem with it, however, I don't have a 2nd DVD writer to test it, but I assume it's perfectly working 'cuz it's only +- 15 hours old.

Any help is very appreciated,

many thanks

Other info:
Intel Core i5 4670
2x Corsair DDR3 4GB RAMs

My System SpecsSystem Spec
12 Sep 2013   #2


Try a VGA monitor.

Unplug all other HD's and peripherals,

Boot into BIOS setup, reset to defaults, save changes. (If an EFI BIOS you'll need to decide if you want UEFI BIOS vs. Legacy BIOS. If UEFI follow these special steps for Install, otherwise enable Legacy BIOS or Compatibility Support Module to proceed with normal install.) Set DVD drive first to boot, HD second, set SATA controller to AHCI, Save changes and Exit.

Then boot into Windows 7 installer DVD or flash stick burned or written using tool and latest ISO for your licensed OS version here.

At first installer screen Press Shift + F10, or enter System Recovery Options to open a Command Box, type:

SELECT DISK 0 (after confirming Windows 7 target HD #)

Next click Install Now, then Custom install to Clean Install Windows 7 to the partition you created. If it fails then report back at which step and the verbatim error message. You can begin your research by googling the error number and text.

In addition read over these steps to understand the tools and methods which work best to get and maintain a perfect Clean Reinstall - Factory OEM Windows 7. The steps are the same for retail.

After install you can adjust partition size or Create new partitions for data, etc. in Disk Mgmt. You are creating the partition here for the purpose of wiping the HD and marking Active which overcomes certain install failures.
My System SpecsSystem Spec
12 Sep 2013   #3

Windows 7 Home Premium 32 bit

Quote   Quote: Originally Posted by toerk37 View Post
....I've checked the HDD and there is no problem with it, ......
Pray tell us how you checked your HDD.
My System SpecsSystem Spec

13 Sep 2013   #4

Windows 7 Ultimate 64-bit

Quote   Quote: Originally Posted by jumanji View Post
Pray tell us how you checked your HDD.
By simply unplugging it and trying to boot from CD

- First reply; thanks for the informations, I'll try these steps after I get back from school and I'll inform you with further information.
My System SpecsSystem Spec
13 Sep 2013   #5

Windows 7 Ultimate 64-bit

I think I wasn't clear,
I'm not able to boot to the installation screen.
When the screen "Windows is loading files..." pops up, near 80% it freezes and gives me the error. So I dunno what the problem is.
My System SpecsSystem Spec
13 Sep 2013   #6


That's why the steps I gave you begin by having the BIOS reset to defaults, and offer the latest official ISO to try a new installer with tool to burn to DVD or write to flash stick. If one install medium fails, try the other.
My System SpecsSystem Spec
13 Sep 2013   #7

Windows 7 Ultimate 64-bit

I'm not sure, but if UEFI only works with x64 OS, I'm afraid I might have a x86 OS by the hand
That's maybe also why it pops up an error.
My System SpecsSystem Spec
13 Sep 2013   #8

Windows 7 Ultimate 64-bit

imma try the usb boot
My System SpecsSystem Spec
13 Sep 2013   #9

Windows 7 Ultimate 64-bit

Currently installing Windows 8 Professional via USB, everything seems to be running smoothly,
must be a DVD reading problem I guess or incompatibility (mobo is W8 Ready)
My System SpecsSystem Spec
13 Sep 2013   #10


In the original steps I gave you, a video was provided to understand the difference between UEFI and Legacy BIOS install of Win7.

If you wanted to install Win7 in UEFI mode then it requires special steps shown in UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with .

If you want to use a USB stick to install in UEFI mode it requires these special steps: UEFI Bootable USB Flash Drive - Create in Windows

To install in Legacy mode, follow these steps to Bypass UEFI to Install WIn7 .

If Win8 will install then Win7 should also. The only thing that can block Win7 from install to a Win8 PC is if Secure Boot is kept enabled in BIOS Setup. I'd check that now.

If you can install Win8 then you should be able to install Win7
My System SpecsSystem Spec

 Freshly built PC - 0xc00000e9 error

Thread Tools

Similar help and support threads
Thread Forum
Error 0xc00000e9 (|boot\bcd) i/o error when attempting to reinstall
I purchased the factory cd for my laptop to re-install my os (Windows 7 64 bit) but when I try to boot from it I get an error \boot\bcd, 0xc00000e9, An unexpected i/o error has occurred. It happens when I try to boot from my internal cd-rom drive and also from an external usb drive. I can view the...
Installation & Setup
BSOD on freshly built computer
So a two days ago my computer was giving me tons of blue screens. I figured I'd format everything and start fresh. After dealing with various different install issues, I finally got Windows to boot up. Fast forward to yesterday and I end up with blue screens nearly every 15 minutes. I think...
BSOD Help and Support
I/O Error 0xc00000e9
Ok i have been doing lot's of searching on this and would appreciate as much help as possible before i tear my hair out! Il try keep things simple and list as much information as possible. I closed my laptop over going to bed sunday night, HDD was making strange noise's, eventually stopped....
General Discussion
Freshly built PC with 2 random NTOSKRNL.exe 0x0000000a & 0x00000109
Hi Guys, I have a new pc here that has been built in the last 2 days. And when the machine has been idle it has blue screened twice with NTOSKRNL.exe errors (see attached) one with a 0x0000000a and another with a 0x00000109 error Machine stats are Asus P8z77 V pro Intel i7 2700k 16gb ram...
BSOD Help and Support
Dell inspiron 14r: Error 0xc00000e9: Unexpected I/O error
hey friends this is a tougher one. I get this error using both a HOme premium DVD and using the HDD on this system ... best I can tell it is not giving me options about what sort of boot to attempt. Not sure the hardware is healthy but there are no removable devices present someone pls give...
BSOD Help and Support
BSOD on Freshly Built PC. Only Crashes When I am not There?!?!
Hello Everyone, I recently bought a ton of new computer parts to build myself a new rig with my Christmas bonus. Well everything came in and put everything together and everything seemed to boot up fine. My only issue is that my computer randomly restarts and when it loads back into windows...
BSOD Help and Support

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 03:16.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App