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Acer Aspire E5-575G || Windows 10 Home || NO BOOTABLE DEVICE
So let me tell the truth. I had tried to install Ubuntu 18.04 along side windows as a dual boot system. i have done it before many times but this time was my bad luck and something gone wrong. after restarting i have welcomed with windows 10, i repeated this 2 - 3 times then searched on internet for the strange issue and got some results like grub menu is not properly installed and all. then i followed a tutorial and ran ubuntu through a LiveDVD and fired those command and nothing happened. then i again turned off my laptop and started it again and voilla. NO BOOTABLE DEVICE. **BOOM**. what just happened why in the name of holy god that happened to me i missed playing my game Dota2 just because of this issue. i tried too much many commands and tutorial around the web showing similiar issue and its resolution but any of then never worked for me.
So can you guyz please help me.
NOTE : i probably have done ubuntu installtion in bad manner this time and i didn't turned off the fast boot and did not disabled secure boot before ubuntu installation.
System Config :
Boot option : UEFI
RAM : 8GB
HDD : 1TB
Processor : i5 6th Gen
GPU : 2GB Nvidia 940MX