PC stopped booting - Possible swap issue

Hi,

I was using my PC when it suddenly crashed with the following message : https://dl.dropboxusercontent.com/u/...1/DSC_0092.jpg

After I reboot my PC for the first time, I got this message https://dl.dropboxusercontent.com/u/...1/DSC_0093.jpg and I had a log in box (which as you can see isn't the usual Gnome one) and after I entered my username and password showed another error message saying that something went wrong. Pressing Alt + F1 or F2 doesn't show any terminal.

At my second reboot I got this message : https://dl.dropboxusercontent.com/u/...1/DSC_0094.jpg

I'm not sure what caused it, but it may have something to do with what I do this weekend : with GParted I noticed that there was a "useless" 8 Gb partition and I deleted it, but then I found out that it was my swap partition that I allocated a few weeks ago when installing the OS. That said I thought that since I have 8 Gb of RAM and I rarely exceed 3 Gb of usage I assumed that it was pointless to create a new swap partition. So I just updated the /etc/fstab file and commented out the line dealing with the swap partition. I haven't had any issues since then.

Do you have any idea how I can fix this issue? As of now, I am unable to boot.

Thanks