LinuxQuestions.org - [SOLVED] After using alt+prtsc+reisub dual boot system directly boots to windows 8.1

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After using alt+prtsc+reisub dual boot system directly boots to windows 8.1

Hi,
I am using lenovo z510 laptop in dual boot with windows 8.1 and ubuntu 14.04. Ubuntu crashed today and nothing was working. So I used alt+PrtSc+REISUB, it rebooted the system directly in windows without showing the grub menu. I tried it again and same result. But I am able view the grub menu and log into ubuntu by using boot menu(using nova button). I am also unable to access boot menu from the function keys(even after turning off fast start up option). Someone please tell me how to fix the grub and show it in start. Thanks in advance.

The problem has been solved by changing the boot order of ubuntu and windows in the bios menu. Now ubuntu is first and windows is second. Now I can see grub during start.