Hey /g/, I had kubuntu installed on my laptop, and I decided

>>55778807
bumping

yes there is, get any live cd and just reconfigure the boot flag or google ubuntu windows boot or something

but thats pretty much normal, it's just how microsoft says thank you for istalling windows by giving you the finger

>>55779122
Thanks Microsoft. I'll try to boot a liveCD then and google about this bootflag thing.

I think there is no GRUB or whatever and thats the problem.

>>55779143
you just have to restore grub to the MBR which was overwriten by the windows installer

>>55778807
boot an ubuntu live cd (preferably the same version of the installed OS) and open a terminal (ctrl+alt+t)
assuming your root partition is /dev/sda1 (check it on gparted/gnome disks/ fdisk -l) execute these commands:

1. sudo mount /dev/sda1 /mnt/

2. for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done

3. sudo chroot /mnt

4. sudo grub-install /dev/sda

5. sudo update-grub

6. reboot and remove the live cd/usb

more resources: https://help.ubuntu.com/community/Grub2/Installing