Supermarket discs?
Glad I'm not the one entrust my data to them
I'm working my way through Bulkpaq ones at the moment as they use a reliable dye but due to the cheapness of them have to accept the odd disk where you can see the dye doesn't cover the whole disc to the edge so has reduced capacity. If you want quality Verbatim are widely available and fairly consistent. The cream at the top of DVD recordable media has always been Taiyo Yuden though.
Actually due the the ? over DVD dye types still and untested life spans I still use CDs for more important archive data
Forget checking recordable info for DVDs in XP as there is no support in the OS. The only time that you'll see info there is if you're using 3rd party packet writing software (such as InCD which comes with some versions of Nero software)
From what you're describing it suggests two things as a likely cause but a third possible. I'll put them in ascending order of probability because it'll be easier, and cheaper to test that way. Note the first and least likely option is more probable, but still less likely than the other two, if you have other DVD writing capable software on the machine. This includes software such as Norton 360, iTunes, etc which have writing ability but are not outright burning software.
1. Nero aspi layer corrupt - Remove and reinstall the software. Personally I suspect it'll still have the same fault because normally it'd knock out CD writing as well but it's a simple, no cost option and it might fix it.
2. Dye type variable across the batch - Try a more reliable brand. This normally isn't as much as an issue as it used to be but is still a fairly noticeable factor especially as DVD drives age and the lasers start failing or getting dirty. Leading to...
3. DVD laser issue - Either due to dirt (normally shows up when writing first, then reading recordable media, then factory pressed discs) or just due to the laser starting to fail on the drive. Trying to clean the drive with a cleaning CD might help but results can vary (don't use a compressed air can as you can just as easily cause damage with these if you don't know what you're doing). Chances are if this fails your drive is on it's way out.
As a
last resort you could try a firmware update to the drive but I'm not going to search for one for you for two reasons:
1. It has worked with your media before and firmware updates normally help with media that has never worked or been unreliable at best.
2. If the firmware update doesn't take properly you more than likely will end up with a completely dead drive, even manufacturer's sites will say run at own risk. I'm not being responsible for that when I think it has scant chance of fixing the issue