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: Windows 7 Installation Errors : Troubleshoot Step by Step

Windows 7 Installation Errors : Troubleshoot Step by Step

How to Troubleshoot Windows 7 Installation Errors Step by Step
Published by Bare Foot Kid
09 Aug 2011
Published by

Troubleshoot Windows 7 Installation Issues
If you are having a hard time getting Windows 7 to complete the installation process, study the information and steps outlined in the tutorials linked below to sort through each in-turn and hopefully find a solution to the particular issue that is causing the problem(s) and get Windows 7 installed successfully.

General Information
1) If the installer is one you acquired, perhaps the ISO file is bad and another will work; or if you burned it to DVD yourself, another burn is needed, use ImgBurn at no greater than x4 speed with a verify.
ImgBurn Free ISO Burning Software
2) If the PC is capable, add the installation files to a USB stick and boot that to install.
Create a Bootable Windows 7 Installation USB Flash Drive
These are here for the basic, very useful information they contain.
How to Do a Clean Installation with Windows 7

Do a Clean Install with a Upgrade Windows 7 Version

Backup User and System Files in Windows 7

Copy & Paste in Recovery Console on Windows 7

3) This is starting to become less an issue with Windows 7 and todays motherboards but it is still occasionally a help; remove all but 2GB of RAM and try the install like that.

PC RAM is extremely susceptible to stray, static electric charges generated by being physically handled; be sure to unplug/power-down the PC and bleed off any residual charge using the PC power button before you remove it.

4) Test each stick of RAM individually for at least one complete pass though overnight would be best.
Test and Diagnose RAM Issues with Memtest86+
5) Use the HDD manufacturer's diagnostic tools to run full tests on the HDD.
Hard Drive Diagnostic Tools and Utilities
6) Use Option Two of this one to run CHKDSK form a command prompt at boot.
How to Run Disk Check in Windows 7
7) In the PC BIOS make sure the "Storage Controller" is set to AHCI mode rather than IDE mode or if it's set to AHCI set it to PATA/IDE, try it both ways.

8) Perhaps install in IDE mode and enable AHCI mode after the install completes.
AHCI : Enable in Windows 7 / Vista

9) To rule out HDD Master Boot Record format errors, boot the Windows 7 installation media to diskpart and run the clean command, it takes only seconds to complete; once the clean finishes, exit diskpart and use the Windows 7 installer to create and format a single 100GB partition for the installation.

If that doesn't work, after another clean, use diskpart to create, format and mark Active a single 100GB partition to see if that works, use Step Two #2 in the SSD/HDD tutorial for reference.

You can always extend the Windows partition to include the remaining unallocated space on the HDD / SSD or create additional Primary partitions or an Extended partition after the installation completes if you choose.

10) If you have ever had Linux installed to the HDD in any way, a simple clean command will not over-write the Grub boot-loader, you must use the full clean all command to completely over-write the Grub loader so Windows will install.
How to Boot to DISKPART at PC Startup

SSD / HDD : Optimize for Windows Reinstallation

Boot / Startup Issues
11) These contain additional information you may find a use for.
Startup Repair Infinite Loop Recovery

Startup Repair - Run 3 Separate Times

System Prep
12) If you have access to a second PC, use Method Three to install to the HDD on another PC and when that's complete move the HDD to the target PC to finish-up.
Transfer your Complete Windows 7 Installation to a New Computer

Additional Information
Not really related to Installation errors though useful information all the same.
User Profiles - Create and Move During Windows 7 Installation
If you want to completely wipe, over-write the entire Hard Disk Drive of any possible format or Grub corruption, malware infection, for security purposes or just to get the best possible space to install Windows to, have a look through these.
Secure Erase / Wipe : Definition and Methods

Additional Secure Erase / Wipe Information
If you have any questions or comments, please feel free to post to this same tutorial using the orange "Post Reply" button and someone will be glad to help.

Enjoy! :)

14 Aug 2011   #1

Microsoft Community Contributor Award Recipient

Win 10 Pro x64

Nice work Ted, That will save a lot of repeat typing and linking.
My System SpecsSystem Spec
14 Aug 2011   #2
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate

Thank you my friend Derek! :)
My System SpecsSystem Spec
27 Aug 2011   #3

Windows 7x32 Home Premium & XP SP3 x86

Thank you for putting this all in one nice neat package.

It is an excellent summary of what has been going on here.
My System SpecsSystem Spec

27 Aug 2011   #4
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate

Hello Dusty, I'm glad you find it useful and thanks for the kind words.
My System SpecsSystem Spec
05 Jan 2014   #5

Win7 Professional 64bit
Almost given up :( win7 reinstall errors !

Hi folks,

I have a lenovo Edge 14 laptop 500GB, i5 processor, 8GB RAM - standard build type 0578-KPG machine, 2-3 yrs old and working perfectly fine till a few weeks ago.

Recently started rebooting into "startup repair mode" - which takes 3-4 hours and is only a temporary fix. When it restarts - goes back to "startup repair"

Have tried the following (several times!!) :
1. Used USB Win7 Pro installation disk to do a "repair install" and a "clean install". Installation is perfect with no errors.
2. Loaded a system image - made when laptop was absolutely fresh (only OEM installed win 7 pro on it)
3. Tested HDD with chkdsk, RAM test

Unfortunately, nothing has worked. After every install still get the "windows starting... " followed by BLUE scree of death. ERROR DETAILS :
STOP : c000021a {Fatal System Error}
The initial session process terminated unexpectedly with a status of 0x00000000000 (0xc0000001 0x00100720). The system has been shut down.

After this goes back to the startup repair loop... Will spare the details of the dozens of hours trying to fix this... have trawled through several forums, but nothing has worked. Any help is HIGHLY HIGHLY appreciated.

Thanks all,
My System SpecsSystem Spec
07 Jan 2014   #6
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate

Hello Win7ontheEdge, welcome to Seven Forums!

Have a look through the information in this tutorial at the link below for some additional ideas and be sure to post back with any further questions you may have and to keep us informed.

Troubleshooting Windows 7 Failure to Start

My System SpecsSystem Spec

Thread Tools

Similar help and support threads
Thread Forum
Can you help me with step by step for dual booting Windows 98 and 7?
I have a cd for win98, but I am scared that something is going to go wrong, like it is going to erase windows 7 and, that it is going to brake my computer, and that it won't work., so I will be left with no OS, since my computer did not came with a windows 7 disk, just like all new computers. Can...
Installation & Setup
In need of Detailed step by step guide to sort out Low disk space erro
Hello, Before I registered here I decided to check around the internet, unfortunately the guides offered on other pages I could not understand. Here is what I have: Windows 7 (not sure if 32 or 64) Anyway out of nowhere my disk space has almost reached it's maximum 447GB. I am limited...
Step by step install of backup hard drive
Hi, I installed a second hard drive in my desktop. The only purpose for this drive is Back up . I had room in the case. Western digital 500gb drive was on sale sooooo.. I figure it is better than external. Need to Know Procedure. It is a blank new drive. I used a seperate SATA cable from Power...
Backup and Restore
GTA4 PC : EFLC Step by step account linking process
Good Evening Everyone This account linking nonsense for GTA 4 EFLC Social-Club and Windows Live has really thrown us for quite a loop. If someone could please give us a step by step lesson on this topic it would be greatly appreciated.

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 16:33.
Twitter Facebook