For anybody still holding on and not upgrading Windows 7 to the latest Windows 10 operating system AND is using an ASUS motherboard, we have some bad new for you.

The problem surrounds Windows 7 update KB3133977. According to InfoWorld, this update was a patch for a bug found in the KB2990184 update which, “was a fix for a problem with backing up a Federal Information Processing Standard (FIPS) password to Active Directory in FIPS compliance mode”.

Unfortunately by fixing that bug another bug surfaced which caused anybody running Windows 7 and using an ASUS motherboard which had recently been updated to turn on Secure Boot in the UEFI BIOS.

That bug resulted in this message greeting users who had installed the update.

The message that greeted some users after update KB3133977 was installed.
The message that greeted some users after update KB3133977 was installed.

When this was discovered, the update was still marked as “Optional”. The default setting for Windows Update however is set to download “recommended” updates so unless you had tinkered with that setting you would have been fine.

Unless Microsoft was silly enough to make an update that could stop your machine from booting, one which it recommends.

So that’s what Microsoft did toward the end of April, and now PC users using an ASUS motherboard are screaming at their monitors in frustration. We should point out at this juncture that users running Windows 10 appear to be safe.

Thankfully, for everybody involved there is a fix and it should insure that your PC boots as normal once you complete the following steps.

First thing you’ll need to do is boot your PC up and hammer the Delete key to get into the ASUS UEFI BIOS.

Once in the UEFI BIOS you’ll need to switch to Advanced Mode and from there head to the Boot menu and then Secure Boot.

You should see three items namely Secure Boot state, Platform Key (PK) state and OS Type.  According to ASUS the Platform Key state should read Loaded before you start making changes.

Change the OS Type from Windows UEFI mode to Other OS and then hit F10 to save the changes and reboot the system.

Enter the BIOS by once again by hammering that Delete key and  navigate once again to the Secure Boot sub-menu in the Boot menu.

Check that the Platform Key (PK) state is now reading as Unloaded and that should allow you to hit F10 to save your changes and reboot as you normally would.

If you encounter any problems we suggest sending your feedback to ASUS at the bottom of its support page.

Good luck to all who are affected by this. It really isn’t the nicest thing to be forced to troubleshoot your PC just before a weekend of gaming.

[Via – InfoWorld]