Dear,
I know the topic does not deal with Boot PXE with lenovo thinkpad t61, but I need to help with PXE boot on the Lenovo Thinkpad T61. I searched the internet for a tutorial to guide me in this task, but I did not find anything. Can anybody help me?
Features: PXE boot with Lenovo T61, to access windows server 2012.
Thanks!

Windows server at Microsoft has a wealth of information how to configure the server to provide for PXE. Technet is a good place as well as the server home page.

Once you get your server to provide the few resources then you'd look to this laptop. Almost all the IBM's and as such the Lenovo's have pretty good internal support for PXE.

Usually you simply enable pxe boot in some cases and then select it as a boot option above the other boot choices.

My problem is setting the Lenovo T61 BIOS for the PXE network boot.

What does the owners manual say about it?

I do not have the manual. I'll look for a copy on the net / internet.
Maybe my text is a bit confusing, it's because I'm using a translator.

Tell me your exact full model number.

But it actually does.

In the BIOS setup (F1 or F2 on start) there should be a 'boot' menu. In there should be a boot order. Make network boot the first in the order. You might also disable every other boot method.

Product ID: 7663 R6

I tried to do the "step by step" indicated / informed in the articles and videos of the internet / network, but at some point I do not have progress. That is why I ask for help.
thanks for the help.

But I still can not make progress.

I transcribe below a "step by step" that I used to make the configuration:

1)Boot up the computer.
2)Press F2 -> press Enter -> press F1.
3)This should take you to the BIOS screen. Select Security -> select Secure Boot -> set to Disable -> select Start Up -> select UEFI/Legacy Boot -> set to Legacy Only -> press F10.
4)Once you press F10, reboot then press F12.
5)You should now be at the boot menu. Select PCI LAN.
6)Press Enter.
7)This should bring up a screen with the Intel Network Boot Agent. Simultaneously press Function and P (on some Lenovo ThinkPad models, this will be the same as pressing Pause|Break).
8)Press Enter.
9)This should go to failure, then go to the boot menu.

I can not find in the BIOS the steps described in the item:

3) Secure Boot (in BIOS have secure chip); -> select UEFI / Legacy Boot (...) -> set to Legacy Only.

That's why I can not go on.

I can send print of the BIOS options. Just show me how I can upload the images.

There is no option for that in your laptop. The T61 predates Lenovo using uefi by quite a few years.

Is there no option for PXE on my laptop?

No, there should be an option for PXE (not 100%, been quite some time since I used a T61), but there is no option for UEFI/Legacy Boot.

Did you have this choice? "Select PCI LAN"