Hi,
Assuming that you have Win10 installed as you didn’t say, there are two options you can initially try.
a) Start the laptop and when it goes to boot into Windows force stop the laptop by holding the Power button operated until it shuts down.
Do this 3 times in a row, i.e. Start > Boot > force shutdown > start > boot > force shut down etc.
On the 3rd attempt it should boot into the Windows Recovery Environment menu area.
When there click on ''Troubleshoot > Advanced > Startup repair'' and follow the prompts.
''Do not select “Reset this PC”, because if you select the wrong option after this you can delete all your data as Windows will be reinstalled''
If that doesn’t work or you can’t get into the WRE menus for some reason:
b)Try booting from a Windows Recovery disc to repair the startup.
A USB recovery disc can be created from any known working Win 10 computer.
In the host PC go to Control Panel > recovery > create a recovery drive and follow the prompts. To get to Control Panel, click on the Windows start button on the left side of Taskbar and type Control Panel in the search box, then click on the Control Panel app in the results
You will need a 8GB USB flashdrive and about 40-60 minutes of time.
Once the drive has been created, plug it into the laptop, and when it starts change the boot order in BIOS to boot from the USB 1st.
If it doesn't boot from the USB go into BIOS and enable Legacy USB or CSM setting (not sure with your laptop which one), save the changes and restart the laptop.
It should boot into the Windows recovery menus where you go to Troubleshoot > Advance > startup repair and follow the prompts.
The difference is you're using the files from the USB and not what are stored in the laptop as they may have been corrupted.