Trying to install kubuntu and need help

Okay, I apologize if there are similar threads… but I’ve scoured the internet and never have I run across a helpful answer. So I’ll ask here…

I have an old laptop, an Acer Aspire 5515… It was running Vista and was taking 5-10 seconds to just do anything, even as simple as opening a folder. So I decided to install a windows-user-friendly version of Linux – something I’ve wanted to try for a long time. I ended up settling on Kubuntu because I read somewhere that it’s medium-light weight, and good for people used to running windows, after all, I can always replace it with something different later on.

I went to the ubuntu site itself and downloaded
“kubuntu-16.04.1-desktop-am64”

Then the problems started flowing in. Some of it user error I admit… first the CD I got wasn’t big enough, then I forgot you can’t copy past an iso file, then I couldn’t get the Acer to boot from cd drive

Eventually, I fixed these… I burnt the iso image right, used a larger DVD, and changed the bios to boot from the cd. I went to try to just ‘try’ Kubuntu but that just wasn’t working very well, so I just went and tried to go ahead and replace the OS. I knew it would kill everything on the Vista, but I already transferred the files I wanted to keep and the computer was unusable as it was, so I figured why not.

I went through with trying to do the installation, and the first time got to about 80% when I got the Errno 5 Input/Output Error

Alright then… it said something about heat so I placed the computer on a low running box fan as a make shift computer fan (It was getting hot anyway), and I tried again. Made it to about the mid-60s and got the same error.

This time, I went and I double checked the iso… it’s indeed the most recent one on the Ubuntu site, and then I used winMd5sum, which says the checksum is correct. I then got another disk and downloaded imgBurn and burnt a new disk at the lowest possible speed (tried for 1x, but it did 2x).

Tried again and it still pulled the same error around the same spot.

So this time at the bootup screen I pressed shift and chose Check for Defects, it returned with Errors found in 1 file
The memtest86 says no errors.

So I’m assuming that means there’s a problem with the CD/iso? The check sum was supposedly correct and it was burnt on the lowest possible burn with trusted software. Also, the cd drive works just fine and the disk itself is brand new without a scuff on it.

I’m pretty stumped what to do. I’m going to try to find a cheap flash drive at the dollar store or something to try to boot from USB, but if there is any troubleshooting I could do to get this to work without having to spend money I can’t really afford, that’d be really helpful.

As it stands I have a nearly 10-year-old computer with no OS whatsoever on it because the windows section is all deleted, but the Ubuntu section is not fully installed.