Thank You, Phillip,
exactly as You explained.
(I have Win7 upgraded to Win10 (and this was installed in BIOS mode) and
besides this I tried to install Ubuntu)
Since my laptop for some reasons did not loaded USB stick, I switched to
support UEFI mode in BIOS.
Hence the problems.
I solved my
Your disk is currently partitioned to boot in bios mode, but you booted
the installer in EFI mode. You either need to boot the installer in bios
mode, or partition the disk using GPT and set up an EFI system partition
to install in EFI mode. This will be done for you if you choose the "use
entire
