U510 Boot Completely Messed Up

Question

So my u510 was originally installed with Win8, and I wanted to dual boot Ubuntu alongside it, so I shrinked the existing windows volumes slightly in order to make room for the new partition, but in the process of installing I may have royally screwed myself over somehow.
When I boot up the laptop, the Lenovo logo appears for a short while (can't go into BIOS/BootMenu anymore), then the screen just has a blinking "_" at the top left corner and is unresponsive to any sort of input. 
In hindsight, I probably should have done this while I wasn't half asleep, as now I don't remember what exactly I was doing anymore. Any idea what I can do to fix this? I'm pretty sure a majority of my data is there, I've just completely messed up one or some of the partitions, as my windows partition was working fine until i restarted and started getting these errors.

Answer 1

Hindsight2020,
Welcome to Lenovo Forums !
Thank you for taking the time to post your inquiry. I see that you have tried to have a dual boot on your Lenovo IdeaPad U510 running on windows 8.0. 
I do have a question like how do you access the BIOS on the computer? Like what keys do you press? 
Solution : If you have important files or data on your computer the only way that we can back it up is for you to get in touch with Lenovo Services Premium Support. 
* you need to order the set of recovery media with data backup
Direct Line would be 1-855-271-3878 option 2
I hope that this can help you get to your end goal
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