Use F12 for Bootmenu. Please remember press the Fn+F12 to make it work.
If all do not work, make sure your keyboard is functional or try a external USB keyboard to check.
To install Windows
- insert Windwows DVD
- Boot from disk
- install as instructed
On the Lenovo G500S you will have to push the little button next to the power button while the laptop is turned off or asleep, to enter the BIOS and boot menu. You can change the boot sequence by entering the BIOS and in there make the dvd-player the first boot device.
I have hp 2230tx laptop and kingston dtse9 pendrive. I am not able to reach startup menu with this pendrive plugged in, which is making me not install new windows 10. How can I reach startup menu? – Immortal Player – 2017-07-25T12:26:56.977