Question Recommendations for free DVD-R burning software ?

Okay I've got a Lenovo Ideapad 100 with Windows 10. It has an inbuilt disc drive that no longer works so I've bought an Origbelie external disc drive. I managed to burn a CD-R using Windows Media but I tried to burn to a DVD-R this time and it says not possible, so I'm wondering if anyone has used a free online software tool that they'd recommend. Thanks.
 
I'll try that thanks. I did convert a couple of files into MPEGs with AVC converter which are small enough to fit on a 4.7GB DVD-R. I did one before on the disc drive built into my laptop when it was working but now it's not. I just need a new platform to put the files on to so I can burn them. I can probably do this with the AVC software but it's more of a converter and I've read the quality of the burn isn't so good on it. I'll try your advice. Thanks.
 
I've just downloaded this from the official site. I added two files to be burned onto a 4.7GB dvd-r but it said I'd exceeded the capacity and the burn might fail. The two files are 1.33GB and 1.49GB which should fit. It's telling me the duration of the disc is 2hours and 26 minutes, but when I burnt a disc on the laptop's built-in burner last year it was the size of the file that was considered and I was actually able to fit 4 hours on the dvd-r. I'm probably doing something wrong here! I downloaded the express burn by NCH software and I'm using the video DVD option. Any idea why it's saying these two files won't fit?

Thanks.
 
For some reason the CDburnerxp won't recognise my external disc drive. It's trying to use the old integrated disc drive which doesn't work anymore. When I click on Target device for burning process there is just the E drive on the drop down menu. I think I read that the F option is the external drive but that's not there. Can anyone help? Thanks.
 
For some reason the CDburnerxp won't recognise my external disc drive. It's trying to use the old integrated disc drive which doesn't work anymore. When I click on Target device for burning process there is just the E drive on the drop down menu. I think I read that the F option is the external drive but that's not there. Can anyone help? Thanks.
What suggests your external drive is F?

Please show us a screencap of your Disk Management window.
(upload the pic to imgur.com, post the link here)
 
I'm away from my laptop now but I'll take a photo tomorrow. I can't see a way of choosing my external drive as the destination of the burn. There's just two options both of them E which opens the integrated disc drive. The CDburnerxp just says no disc in drive after I've connected the external drive to the laptop. I tried it in the other port but no joy. I did a CD-R no problem by clicking the next drive button which appeared on windows media player but I'm struggling to do a dvd-r. Can you think of a way? Thanks.