X2xx/s (X200/s-260) X250 always boots into BIOS

[sg08234]

(Obviously after update to BIOS 1.23) my Thinkpad X250 (Windows 10 Pro 1607) always boots into BIOS. I am able to start the X250 via F12 bur this can't be the lopngterm solution´.

I already tried with no success:

• Windows 10 start repair
• Bootrec /fixmbr
• BIOS:
  • Optimized defaults
  • Secure Boot disabled
  • UEFI and Legacy
  • Legacy first
  • Only Legacy
  • Disable "Execution Prevention" (https://forums.lenovo.com/t5/ThinkP...7-64-bit-after-upgrade-bios-2-36/td-p/3398329)

Do you have any idea(s)? Thanks - Michael

 

[Mornsgrans]

Hello,
please have a look into that thread in the Lenovo-forum.
https://forums.lenovo.com/t5/ThinkP...lback-BIOS-X250-from-v1-23/m-p/3394367#M71749

Have success.

 

[sg08234]

Thanks! Unfortunately all the hints (esp. "Disable Execution Prevention"as stated above) did not help .

Isn't there any way to "downgrade" the BIOS?

What are the Lenovo preferred settings for Windows 10 Pro 1607 on X250 (Secure Boot, UEFI or Legacy, ...)?

 

[Mornsgrans]

As written in the Lenovo forum - thread there is no way to rollback this BIOS version to a previous one, because the older ones contain lacks of security.

Please call Lenovo for a service call and/or post your trouble in that thread.

 

[sg08234]

OK - Is there any document / thread describing the preferred BIOS settings for Windows 10 Pro 1607 on X250 (Secure Boot, UEFI or Legacy, ...)?

 

[Mornsgrans]

Since Windows 8:
Secure boot: on

Best experiences made many users in this forum:
BIOS Mode: both
(f.ex. repair of bootsector need "UEFI" or "both")

Other settings: default

(just my opinion)

 

[sg08234]

I performed some further tests:

1. Clean install 1607 on harddisk: No Boot-Problems
2. Clean install 1607 on SSD: About every second 2nd Boot shows „Intel PXE Boot“

It looks like the SSD is not always (quick enough) recognized by BIOS / Boot-Manager.



Any ideas? Many thanks - Michael

- - - Beitrag zusammengeführt - - -

The keyboard was the troublemaker! Due to a unstable connection mainboard-keyboard F1-keytrokes were transferred at random. Thus the laptop in these cases started with BIOS.



I have to ask Lenovo support for a stable connection (the little black fixing part was broken)



Thanks to all - Michael