Weird problem: Frequently get boot errors on way to Win 8.1, and when go into BIOS, find that boot option #1 setting for Samsung 850 EVO Pro SSD system drive has switched to something else (Samsung is in SATA3 Port 0). Usually takes a couple of boot option resets to get it to hold and the computer to boot normally into Windows. Doesn't happen every time, but often. F7 BIOS (UEFI). Mobo is revision 1.1. CPU is not overclocked.
Background: Switched from GA-Z68X-UD3H board to the Z97X-UD5H-BK in early May and soon after that switched system drives from a 128gb Plextor SSD to a 256gb Samsung 850 EVO Pro (the latter was cloned, then did an in-place repair install, which now looks was unnecessary). Soon after, I started having frequent boot errors that shouldn't have been occurring, with one or more of the following: disk read error, Boot\BCD error, Windows boot stalling, MBR Error 1 suggesting to boot from a floppy drive (don't have one), blank screen. After those, usually one to three reboots led/leads to a successful start up. At some point, I decided to check the BIOS settings and discovered two things:
- Boot #1 option has changed from the Samsung SSD, typically to either the Plextor DVD drive, or by dropping the HDD/DVD drives from the list and showing only Samsung, Canon and disabled.
- After resetting the boot options, it takes at least another reset/save to get them to hold, tho saved each time. After the first reset, BIOS boot options typically only show Samsung/Canon/disabled as boot options, as just mentioned. It takes another reset for all the drives to show in the lists (all drives are listed under Peripherals > SATA configuration, no matter what). The reboot in between is typically the one that shows a blank screen.
I got a support ticket with Gigabyte and they suggested disconnecting all the USB connections except the mouse as the starting point for a test. But it made no difference. In fact, it took four boot option resets to get to Windows. That's when I figured it worth posting here.
Any ideas? Thanks,
Background: Switched from GA-Z68X-UD3H board to the Z97X-UD5H-BK in early May and soon after that switched system drives from a 128gb Plextor SSD to a 256gb Samsung 850 EVO Pro (the latter was cloned, then did an in-place repair install, which now looks was unnecessary). Soon after, I started having frequent boot errors that shouldn't have been occurring, with one or more of the following: disk read error, Boot\BCD error, Windows boot stalling, MBR Error 1 suggesting to boot from a floppy drive (don't have one), blank screen. After those, usually one to three reboots led/leads to a successful start up. At some point, I decided to check the BIOS settings and discovered two things:
- Boot #1 option has changed from the Samsung SSD, typically to either the Plextor DVD drive, or by dropping the HDD/DVD drives from the list and showing only Samsung, Canon and disabled.
- After resetting the boot options, it takes at least another reset/save to get them to hold, tho saved each time. After the first reset, BIOS boot options typically only show Samsung/Canon/disabled as boot options, as just mentioned. It takes another reset for all the drives to show in the lists (all drives are listed under Peripherals > SATA configuration, no matter what). The reboot in between is typically the one that shows a blank screen.
I got a support ticket with Gigabyte and they suggested disconnecting all the USB connections except the mouse as the starting point for a test. But it made no difference. In fact, it took four boot option resets to get to Windows. That's when I figured it worth posting here.
Any ideas? Thanks,
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