Solved! windows 10 installation issue

Sep 9, 2019
can Anyone Help me. i have laptop Lenovo y520 with inbuilt Samsung ssd, and Hdd,
windows was installed on ssd inbuilt. but now system startup repair failed only after boot.
i tried all methods to fix but not working.
now i want to install new fresh windows 10 on it.
i created bootable usb and tried to install but ssd not listed in select drive option in windows installation. only hdd showing there.

please help me. its kind request
Remove the hard drive and when you start up the machine, go into the BIOS and see if that recognises the SSD. If it does, go ahead with the installation and add the hard disk later.