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3 Posts

05-31-2021

Poland

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Ideapad 720-15IKB (Type 81C7) - can install Linux but not Windows

2021-05-31, 11:24 AM

Hello,

 

I bought a second-hand Ideapad 720-15IKB (Type 81C7) and I have a problem installing Windows 10 on the machine.

The notebook freezes at random stages of Windows installation - in general before selecting target system disk, often already at Lenovo/Windows logo with spinning dots.

I tried installing the system both from a Lenovo Recovery image on a USB stick (at which case the installation actually made it to the point of adding language pack), as well as using another clean (non-branded) Windows installation USB.

Lenovo Diagnostics booted from the USB with no problems, and all hardware tests were completed successfully.   

I tried switching on and off different bios options (disabling individual devices, discrete GPU, etc.), disconnecting internal battery/RTC battery - all with no changes.

I changed the thermal grease and thermal pads on the processor, GPU and video memory. No component on the system board seems to be overheating.  

What's really odd is that I can install, boot and run Linux (Ubuntu) without any problems, apparently with all devices running OK.

 

Can anyone suggest what I could do to be able to install Windows?

Thanks in advance!

 

PS:  I think the system board should have 4 GB of soldered-on RAM, but the only RAM that shows up in BIOS and diagnostic software is the one in the RAM slot... if that's any indication.

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4238 Posts

01-08-2021

Philippines

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Re:Ideapad 720-15IKB (Type 81C7) - can install Linux but not Windows

2021-05-31, 14:55 PM

Welcome to the Community Forums Pe_Ha,

 

Glad you're here.

 

Here is the list or OEM Certified Linux compatible machine but do not show your model.
 
Like other models which is not also not listed, there are model that would also work with some Linux distro.

 

OEM cannot guarantee full performance of features but you can check out the Linux category/boards so other members with similar experience can share.
 
You can try to reload the default BIOS then save and exit and see if the total ram would also show up.

 

Perform a static discharge/power cycle

- Make sure there is still remaining battery power, able to power up the machine.
- Disconnect all cables and/or peripheral devices connected to the machine (ex. power cable, hdmi cable, external mouse/keyboard, flashdrives, etc).
- Ensure that device is powered/switched off.
- Press and hold down the power button for as long as 60 seconds to drain flea power or excess voltage.

 

Perform/load BIOS defaults

- Make sure that the machine is properly powered down/switched off.
- Find the Novo Button. How a Novo button should look like: https://support.lenovo.com/us/fr/solutions/ht062552 
- Access/click this by using an unfolded paperclip or by using something similar to the latter.
- Machine will power up to Novo Menu. Navigate and select using the arrow keys to BIOS Set Up.
- Inside the BIOS Set Up, navigate to the Exit Menu. Select Load Setup Default - click Enter, select YES and click Enter.
- Select Exit and Save Changes then click Enter, select YES and click Enter. 
- The computer will start up.

 

Else, you should report this to tech support specially if you already tried manual install of BIOS from the support site after default loading.

 

Regards.
Dex_Lenovo



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3 Posts

05-31-2021

Poland

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Re:Ideapad 720-15IKB (Type 81C7) - can install Linux but not Windows

2021-06-16, 10:50 AM

Hello,

Thank you for your suggestions. I have tried these initially with no luck.

One correction to my problem description is that there is no soldered-on ram modules on my system board, so they are not causing any issues, obviously. ;)

I have also tried disconnecting physically all non-essential devices from the system board - just running with lcd and cooling fans (and of course power) connected. The symptoms are the same...   

So the problem still persists - I am unable to install Windows, but I have no problems installing and running Linux.

 

Anyone else can suggest what the problem might be? 

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4238 Posts

01-08-2021

Philippines

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Re:Ideapad 720-15IKB (Type 81C7) - can install Linux but not Windows

2021-06-16, 21:35 PM

Hi Pe_Ha,

 

What OS version and build are you trying to install and how did you prep up the installer?
 
First thing to check is the partition type set in the BIOS and the installer you're using.

 

Taking mind that BIOS configuration and setting should be set specific to UEFI for GPT partition, CSM disabled, Secure boot enabled, OS optimized to Win 10/Win 8 if that is your choice.

Regards.
Dex



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3 Posts

05-31-2021

Poland

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  • Message 5 of 5

Re:Ideapad 720-15IKB (Type 81C7) - can install Linux but not Windows

2021-06-21, 10:35 AM

Hello, 

Thanks for suggestions.

 

What OS version and build are you trying to install and how did you prep up the installer?

 

I am trying to install Windows 10 Home 64bit using the recovery image downloaded for my specific machine (based on s/n) from Lenovo Recovery Media Systems Program Support site and prepped with Lenovo USB Recovery Creator tool.

I am unable to tell the exact build as the installation process is frozen before I have any chance to obtain this information. 

 

Taking mind that BIOS configuration and setting should be set specific to UEFI for GPT partition, CSM disabled, Secure boot enabled, OS optimized to Win 10/Win 8 if that is your choice.

 

I have tried all BIOS configuration settings in all combinations including:

- BIOS defaults,

- OS optimized defaults,

- secure boot enabled/disabled,

- UEFI only/UEFI&Legacy/Legacy only (there is no CSM option in BIOS in my machine)

 

I even tried to install the clean system on another Lenovo machine and swap the disk, but again the system froze on Lenovo/Windows logo with spinning dots.

Is there anything else I can do?

 

Thanks for any suggestions

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