Hi Jinxsie,
Thank you for posting your query on Microsoft Community.
As per the issue description you are facing issue in burning the disc. It is burning very slow. The reason your drive burn slow is that you previously had put in a dirty or scratched disk & your drive light was flashing on & off for a while trying to read it before you ejected it. When your drive accesses a bad disk like that for a period of time it can go into PIO mode which is slow. DMA mode is faster than PIO mode.
Direct memory access (DMA) is a feature of modern computers and microprocessors that allows certain hardware subsystems within the computer to access system memory for reading and/or writing independently of the central processing unit.
Programmed input/output (PIO) is a method of transferring data between the CPU and a peripheral such as a network adapter or an ATA storage device. In general, programmed I/O happens when software running on the CPU uses instructions that access I/O address space to perform data transfers to or from an I/O device.
I would suggest you to try the steps provided in the article mentioned below and see if it helps you to fix the issue.
Method 1: Make sure that the all the files you're trying to burn are not corrupted. To see whether the files you want to burn is corrupted, try playing or viewing them using Windows Media Player. If the files don't play using the Player, Windows DVD Maker cannot burn them.
Method 2: If issue persists try to run the fixit available in the link below and check if that makes any difference
Open the Playing and Burning CDs, DVDs, and Blu‑ray Discs troubleshooter
Method 3: If you are using Windows DVD Maker then choose a slower burning speed for your DVD burner by doing the following:
a. Return to the Add pictures and video to the DVD page, and then click Options.
b. In the DVD burner speed box, select Medium or Slow and then click OK.
To know more about the “Disc-burning tips for Windows 7” visit the following link:
http://windows.microsoft.com/en-US/windows7/Disc-burning-tips-for-Windows-7
For more information, check out this link as well which talks about “Change Windows DVD Maker DVD-Video settings”.
http://windows.microsoft.com/en-US/windows7/Change-Windows-DVD-Maker-DVD-Video-settings
Hope this would help. If issue still persists post back with the information required, current status of your computer and result of the proposed suggestion, we will be happy to assist you.
Regards,