08-20-2016 12:47 AM
I need help on this...
After upgrade the BIOS to 2.36, Win7 64-bit cannot boot anymore, it freeze at 'starting windows' screen. It even cannot boot a Win7 64-bit setup DVD, freeze at the same screen as well.
Solved! Go to Solution.
08-20-2016 01:40 AM
@JDGillis, Thanks for reply. I tried resetting to default but no luck.
I found that I am not alone here... same problem happens on X250 new BIOS.
It can be fixed by the same method which is diabling "Execution Prevention". Note that 'restore to default setting' will enable this lovely 'Execution Prevention' option and then make the boot failure. It definitely a bug in the new BIOS.
Thanks all in this post:
08-21-2016 09:18 AM
I notified Think Engineering that X240 is being impacted with frozen boot up cycles in addition to X250, T450, and T450s systems receiving August BIOS releases that are running Windows 7.
I will post again when I receive an update on the fix.
08-24-2016 11:57 PM - edited 08-25-2016 11:08 PM
I found another issue if diabling "Execution Prevention"...
All Windows 2012 VM in VirtualBox and VMware Workstation will fail to boot. They work perfectly before upgrading the BIOS... it kills me.
Updated: Windows 10 VM also fail to boot
09-06-2016 02:49 PM
In response to customer reports of ThinkPad notebook systems freezing after upgrading to a BIOS published in August 2016, Lenovo has investigated and found root cause.
More information can be found in this KB article: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/ThinkPad-Notebooks-Freezing-At-Boot-Up-A...
A customer-reported workaround for restoring normal boot up behavior can be found here: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T450-Windows-splash-freezes-after-BIOS-u...
I will post again when the BIOS update containing this fix is released for this model.
09-14-2016 11:01 AM
In response to customer reports that after a BIOS update to some ThinkPads, the system may fail to boot, hanging on the Windows splash screen, Lenovo has provided a Service TIP detailing a workaround. A permanent solution will be provided via future BIOS update.
The Service TIP can be found here: https://support.lenovo.com/us/en/solutions/sf16-t0079
09-14-2016 07:13 PM
Hi Amy Tupper,
Unfortunately the TIP cannot solve the problem after I follow all the steps. I still need to disable 'Execution Prevention' to make my Windows 7 boot. Please help.