I have uninstalled some software, then whenever the computer was turned off the windows always restart again, i.e. effectively the computer could not be turned off. I then restored the windows system to a previous date which is before the date software was uninstalled, hoping that the restart problme can be resolved.
After the system restore, on start up the PC shows a blue screen, with messages: The Boot Configuration Data for your PC is missing or contains errors, File:\EFI\Microsoft\Boot\BCD, Error Code 0xc0000034, and "You'll need to use recover tools....".
As the PC does not come with the Windows CD, so I tried to download the Media Creation Tool.exe from Microsoft web site, run it for "create installatio media for another PC", this generated the windoes.iso file, which was copied to a USB drive. However, on boot up the PC does not provide any access to the USB drive, It only shows the following via the F9 Boot Device Options for selection:
Please select boot device
UEFI Boot Sources
Windows Boot Manager
UEFI: IPv4 Realtek PCIe GBE Family Controller
UEFI: IPv6 Realtek PCIe GBE Family Controller
Legacy Book Sources
I have also ran a 3.5 hours extensive test on the harddisk and found no problem with the hard disk.