I had to give up on Ubuntu on my Win7 laptop. It was a Wubi install and lately grub is broken on Wubi. I know a native partition install is better then Wubi but HP builds these laptops with no free partitions and until the warranty is up I’m not messing with it. I fixed grub once but broke again on the next update. It’s too fiddly to keep fixing it so I just give up for now and stick with Win7. it is slower but good enough.
Still running Lucid Lynx on one of my desktops and it’s still my fav.