Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors ...

Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January ...

I've got an interesting problem... my laptop (running XP SP3) is giving me a BSOD while it's booting. The pertinent information from the BSO <BR><BR>UNMOUNTABLE_BOOT ...

Microsoft has linked recent reports of Windows 11 boot failures after installing the January 2026 updates to previously failed attempts to install the December 2025 security update, which left systems ...

Microsoft issues second emergency patch for Windows this month - update your PC today ...

Another week, another big Windows problem.