If you have the Dell PC restore (Recovery Partition) on the hard drive, it will restore it to the original factory condition.  The different DVD burner will not make a difference as the only drivers for and CD/DVD/Blu Ray drive is the default built in Windows drivers.  It will install or attempt to install a different sound driver and this may be an issue (or may not) in the reinstall.  If it is and the PC Restore aborts then you will have to remove the sound card and go back to the original.  If it's not a problem with the Dell PC restore you will need to install the sound card vendor's drivers - don't let Windows install a driver as it usually installs either a generic driver or an older vendor driver. With a 7 year old PC and Windows XP it is probably time for a reinstall.  Backup any user data to a removeable flash drive/hard drive or discs as all user data will be erased when you do the Dell restore.  This would hold true if you were doing a "clean" reinstall from discs (a clean reinstall includes reformatting the hard drive).
I have a question about PC Restore.  I understand that it takes the PC back to it's original state, but what is the effect of hardware changes since the PC was purchased?  For example, I added a BenQ DVD writer a few years after I bought the computer, and also replaced a faulty sound card. Obviously the restore will load old drivers and the newer hardware may not work.  Will Windows theoretically find the new hardware right away and install drivers on it's own?  I guess that's the best case scenario.  I just hope there is no conflict with the restore feature, which is not expecting this hardware. The computer is now 7 years old.  It runs pretty well but lately I've had some performance issues, which are prompting me to consider a restore.  Just slow performance at times, most notably skipping audio and video.  It doesn't happen always, only when the computer is working.  I can watch a You Tube video and it'll be okay (very mild skipping), but if I load a web page in another tab the skipping becomes more frequent.  Keep in mind that even mild skipping is a relatively new occurrence. And at times the skipping can totally ruin the audio/video.  It was really bad a few days ago, even when I wasn't doing anything extra on the PC.  But the last few days it's been much better.  I'm not sure why it would vary this way. Other than that, I find boot up times are slow.  And loading Firefox can take a long time (1 minute or so if it hadn't been launched before in the session).  I guess after 7 years doing a PC Restore/Windows reinstallation may just be called necessary. My weekly maintenance routine consists of clearing history and browser cache in Firefox, and running CCleaner's registry cleaner and filer cleaner features.  Virus scans with Bitdefender, Malwarebyes, and Hitman Pro.  All come up clean.  I reboot almost daily.   The one thing I should try first is a defrag, but I doubt defragmentation is that bad. Any comments or suggestions are appreciated.
Dell PC Restore Question (Dimension 4700, WinXP)