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: Downgrade Win 10 to Win 7 on Lenovo T440S - Installs but stuck on boot

19 Dec 2016   #1

Windows 7 64 bit professional
Downgrade Win 10 to Win 7 on Lenovo T440S - Installs but stuck on boot

I have a Lenovo T440S that had Windows 10 installed. I needed to downgrade to Win 7 due to some software compatibility issues. I deleted all of the partitions, created one large partition, used the clean function in diskpart and converted to MBR, I then put my windows disk on a USB, formatting the USB drive in FAT32 for the install of win 7 since I have no optical drive. I also changed the bios from UEFI to legacy first and the CSM support to on. I booted to the USB with no problems and installed Windows 64 professional. The install seemed uneventful, I named the computer, selected a password and then the install completed and did the final restart. At that point it started to boot, the Lenovo "ThinkPad" splashscreen came on and went dark, as if it was going into windows, but then it repeated, the "ThinkPad" splash screen with the "To interrupt normal start up, press enter" message came up again and this repeats over and over with out end. I tried the reinstall and various and sundry bios settings but nothing helps. I also tried to repair using the USB win 7 installation drive, but I got a "This version of System Recovery Options is not compatible" error. Possibly because the drive is FAT32 and the installation is NTFS?? Right now my T440S is a brick and I am pulling my hair out. Any insight or suggestions would be greatly appreciated.
My System SpecsSystem Spec
19 Dec 2016   #2

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10

Hello and welcome Chris mate if you have the activation code for the machine and if you have access to another machine to make a bootable ISO then go to the link and download the ISO - clean the drive and reinstall from the bootable stick or disk whichever you prefer.
Microsoft Windows and Office ISO Download Tool
Just make sure you get the right version. I always clean a drive before I reinstall to prevent corruption but that choice is yours of course
My System SpecsSystem Spec
19 Dec 2016   #3

Windows 7 HP 64

Don't think is the installation disk format. My Win7 installation USB flash disk is Fat 32 and works fine.
Did the Laptop came with Win 7 or 10?
Why did you install it as Legacy and not UEFI?
Why did you use Diskpart and not the installation wizard?
My System SpecsSystem Spec

19 Dec 2016   #4

Windows 7 64 bit professional

Thanks for the replies. I first tried to install as UEFI, but when I had the bios set to UEFI only I could not boot from the USB. I could see the USB drive from the boot menu after pressing F12, but when I selected that drive to boot from it would not boot. When I changed the bios from UEFI to "both" (UEFI and Legacy with the UEFI first) then when I presssed F12 and the boot menu came up I could select the USB drive and it would boot from that and I could start the installation. But then when I got to the installation part, it would not install because the disk was set as GPT. So I used diskpart to delete all of the win 10 partitions, then used diskpart to "clean" any boot records and change from GPT to MBR so window could install. I did not format or anything else, just let the windows installation take care of the rest. Once I did that I was able to install win 7 with no problems. It completed the installation, but then it seems that once the installation was complete it seems like it can not boot from the new installation of windows, and jut repeats the bios start up over and over
My System SpecsSystem Spec
19 Dec 2016   #5

Windows 7 HP 64

The USB installation disk must have \efi\boot folder to boot under UEFI.
Expand the folder on your Fat32 USB disk.
Set BIOS as before
OS=other (or disable secure boot)
Disable fast boot (enable after installation is working OK)
Boot =UEFI
Once you boot the USB installation disk under UEFI mode, (press F12 and when the boot menu come up, select the UEFI USB drive) go to install - advanced - delete all partitions
Win will create 3 partitions
- UEFI -100M Fat32
- MSR - 120M RAW
- Large NTFS
Install on Large NTFS
My System SpecsSystem Spec

Thread Tools

Similar help and support threads
Thread Forum
clean install win 7 OEM Lenovo (downgrade from win 8) activation fails
Hello there, I have some troubles installing or rather activating windows 7 pro 64bit OEM. I pretty much did what is described here: Clean install of Windows 7 on SSD in ThinkPad T460. Stuck between rock and a hard place. - Lenovo Community In short: I bought a Lenove T460 this summer,...
Installation & Setup
BSOD on Lenovo t440s
Hello, I've recently moved my Windows 7 profile to a T440 from another Lenovo T400, and shortly after the move, I received my first BSOD. Within a day, I received another at the login screen. This Please see attached, and appreciate any help/insight you can provide. Prior to moving to the...
BSOD Help and Support
Windows 8 Downgrade to Windows 7 Lenovo Y410p. Windows install stuck.
I have a Lenovo Y410P, I want to downgrade from Windows 8 and I whipped my hard drive. I also set all of the correct setting such as: Converting HDD from GBT to MBR Deleting Volumes Formatting HDD Setting Legacy Boot Changing Boot Priorites Removing Secure Boot Making OS setting for other...
Installation & Setup
How to downgrade lenovo pc to Win 7 after upgrade to Win 8??
Hello Friends, I upgraded my Lenovo Ideapad Z 570 to Windows 8 a couple of days back. But the new OS is a pain. it has slowed down my system substantially and also some reference memory......terminated kind of errors are also displayed frequently. may b this is coz i did not do any BIOS upgrade...
Windows Updates & Activation

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 07:06.
Twitter Facebook