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Windows 7: Lenovo G50 Win7 Install Problem

25 Aug 2014   #11
vaibhavdubey

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by ExaSpring View Post
I also have Lenovo G50-30. When you try to install Windows 7, you should first change the ACPI setting in BIOS. Default is Version 5. You just change it to Version 4 and the installation will go fine. Also make sure you change the OS optimized defaults to "Other OS". The default is "Windows 8".
Hello.. i too had the same Problem. How to change the ACPI version as I could not find the option in the BIOS Setting. Please help. It's Urgent.
Thank You in Advance


My System SpecsSystem Spec
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25 Aug 2014   #12
vaibhavdubey

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by orelsi View Post
Quote   Quote: Originally Posted by ExaSpring View Post
I also have Lenovo G50-30. When you try to install Windows 7, you should first change the ACPI setting in BIOS. Default is Version 5. You just change it to Version 4 and the installation will go fine. Also make sure you change the OS optimized defaults to "Other OS". The default is "Windows 8".
Confirmed working and also THANK YOU, I spent several days looking for a solution and it was under my nose the whole time. Hell, I made this registration just to say thanks
Hello.. i too had the same Problem. How to change the ACPI version as I could not find the option in the BIOS Setting. Please help. It's Urgent.
Thank You in Advance
My System SpecsSystem Spec
01 Sep 2014   #13
joaol

Win 7 64bit
 
 

Quote   Quote: Originally Posted by orelsi View Post
Quote   Quote: Originally Posted by ExaSpring View Post
I also have Lenovo G50-30. When you try to install Windows 7, you should first change the ACPI setting in BIOS. Default is Version 5. You just change it to Version 4 and the installation will go fine. Also make sure you change the OS optimized defaults to "Other OS". The default is "Windows 8".
Confirmed working and also THANK YOU, I spent several days looking for a solution and it was under my nose the whole time. Hell, I made this registration just to say thanks

It is not working for me , btw, how do you change Version 5 to Version 4, I try install SSD with Win7 64-bit but it keep show same error, thank you
My System SpecsSystem Spec
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01 Sep 2014   #14
gregrocker

 

Reply to every step in Post #4.
My System SpecsSystem Spec
05 Sep 2014   #15
watfam4

windows 7 64
 
 

Finally figured this out and thought I would share. Latest Lenovo G50 bios does not have an ACPI setting, however the BSD is caused by Windows 8 hibernating while trying to do the Windows 7 install. Here's what I did.

In windows 8 start the command prompt in administrative mode. Run "powercfg -h off" to turn of hibernation. Then change your Bios to boot with legacy support. I also had to set the usb to 2.0. I then did a usb install with no problems.

Good luck
My System SpecsSystem Spec
05 Sep 2014   #16
gregrocker

 

Why are you installing Win7 from Windows 8? You should be booting the installer to delete all partitions to Create and FOrmat new, or install to target partition if you want a Dual Boot Installation - Windows 8 and Windows 7 or Vista.

To access the BIOS Boot menu from Windows 8 you may need to go into Advanced Startup Options to access UEFI firmware settings to set the DVD drive first to boot: http://www.eightforums.com/tutorials...ndows-8-a.html
My System SpecsSystem Spec
06 Sep 2014   #17
watfam4

windows 7 64
 
 

Booted from usb with the 7 install drive (no optical drive on this laptop). The install was dying with a BSD for an ACPI error during the initial startup. The latest levono bios for my G50 does not have any ACPI settings. While searching for an answer, I found a mention for the ACPI error on the microsoft site that said it was caused by the windows 8 hibernation. I found how to turn off the hibernation in windows 8. Once I did that, I was able to use/complete the normal windows 7 install from a bootable usb. Then I got rid of all of the extra partitions and reformated the drive. Install completed with no problems.
My System SpecsSystem Spec
06 Sep 2014   #18
gregrocker

 

The setting is known in most BIOS' as Fast Boot, enables a hybrid Hibernation in Windows 8 that makes it Start faster. Turn it off during install.
My System SpecsSystem Spec
11 Oct 2014   #19
Miteto

Windows 7 Ultimate x64
 
 

Here some info I found about that matter in a blog - click. It's written in bulgarian but it says the following:
1. OS Optimized Defaults - select "Win7 OS".
2. Load Default Settings - Hit Enter
3. Load Optimized Defaults - choose Yes! - this is the key point!
4. Then go to Configuration -> USB Mode - choose USB 2.0
5. Next go to Boot -> Boot Mode - switch to Legacy Support
6. Boot -> Boot Priority - switch to Legacy First
7. Exit -> Exit Saving Changes -> Yes

That's it.
My System SpecsSystem Spec
06 Jan 2015   #20
Picco1o

Win7x64
 
 

The issue is due to the numerous partitions, not the BIOS.
  • Boot from a Windows 8.1 disc and erase all partitions (but don't install Windows).
  • Remove Windows 8.1 disc and turn off.
  • Start machine and boot from Windows 7 disc (may need boot order to be set in BIOS and compatibility set).
Lenovo B50-30 with latest BIOS (as of 6 Jan 2015) running Windows 7 x64 having ditched pre-installed Windows 8.1 x64.
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 Lenovo G50 Win7 Install Problem




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