problems with Dell Inspiron 1525 DVD drive

I dont know if this is the right place to post this but here it is:

I have an inspiron 1525 I purchased a couple of yrs ago. Yesterday I was trying to record some music videos on my CD and the dvd drive is acting weird. So I used two different new (blank) CDs and the same happens to both:

I have a number of files and they add up to just 700mb. I put tehm in there and go through the process to record and but the laptop ejects the CD with a little window popping up saying the CD has only 702mb space but this requires 734mb! I keep double checking but the files add up to only 700mb.

I tried a bunch of other files, these ones add up to 699mb. Again rejects it, this time saying it's 714mb!

and today I just tried another bunch of files this times adding up to 697mb and my computer reads that as 704mb and won't let me burn the files. I keep looking for a pattern behind the errors but can't see it.

NOw I've recorded dozens of CDs so I can not be making a simple mathematical mistake. What could be causing this?

I should note that the drive is RELIABLY wrong. In other words, it keeps giving me 714 and 734 for those files, when I try other blanks CDs, so this should not be due to CD quality.

Any ideas? I restarted my computer but no luck.



THanks for all the help.

 

I think these folders contain some hidden/system file. Burning program count every files in folder you drag-and-drop in.

 

This is most likely not a problem with your optical drive. This issue is most likely due to a discrepancy between how Windows calculates file sizes and how your burning software calculates file sizes. Just reduce your first group of files by ~30MB and your second group of files by ~20MB and it should work.