I have two CD/DVD writers on my pc (one internal and one external) and up until yesterday both were working fine and have been for a very long time.  For some reason they both have lost their ability to write.  I have made no major changes to the PC lately but it just happened out of the blue.
I have a HP pavilion a 350n PC running Windows XP Home Version 2002, Service Pack 3.  Both writers are HP, one 300n and the other 556s.
I ran them both through Microsoft's MS Fix It and in both cases I was told "drive is not capable of writing".  Also, when I opened the Properties for the drives there is no tab for RECORDING.
I did a complete scan with both my anti-virus and anti-malware and all was fine.  I did a system restore,  I checked to make sure that the drivers and firmware were up to date, I re-installed Nero, I tried uninstalling both drives in the Device Manager and re-booted, I did a registy edit to make sure they were assigned the proper numbers, and I went to CONTROL Panel/Administrative Tools/Services and made sure the Imapi CD-burn Com was running and set to automatic, all to no avail.
CAN SOMEONE PLEASE HELP ME?  Seriously, I am going crazy here.  By the way, I am not a computer whiz, I did most of those things with the help of others on the internet.  Thank you.
Have you tried going to the CD/DVD manufacturer's site and upgrading your writers' firmware? Also, what is the make and model of your CD/DVD writer?

Try this:
Open Device Manager.
Expand DVD/CD-ROM Drives.
Right click on the DVD drive and click Update Driver in the popup menu.
Select "No, not this time" > Next > Install from a list or specific location > Next >
click the box "Search removable media (floppy, cd-rom) to deselect it.
Click the Browse button and navigate to C:\Windows\System32\Drivers.
Click OK > Next.Failure to write means :
- the write LED is out. Kaput. Acabado.  Tried deleting upper and lowerfilter from the registry? http://support.microsoft.com/kb/314060While it may evolve to be a fact that the "write" component of the drives may have failed. I am less inclined to see that is likely on TWO at the same instant. So don't shoot the horse just yet. Take the two drives(one at a time) and try them on another computer (not necessary but if the other computer uses different burning software that would be an ADDED bonus)The internal one doesn't need to be actually installed as long as the appropriate cables are selected. Is the internal a SATA or IDE? Before you try the above you could try another burning software. There are a number of free ones available (burnaware is one). Any yellow warnings in device manager?truenorth Quote from: Transfusion on March 13, 2012, 12:08:22 AM

Have you tried going to the CD/DVD manufacturer's site and upgrading your writers' firmware? Also, what is the make and model of your CD/DVD writer?

Try this:
Open Device Manager.
Expand DVD/CD-ROM Drives.
Right click on the DVD drive and click Update Driver in the popup menu.
Select "No, not this time" > Next > Install from a list or specific location > Next >
click the box "Search removable media (floppy, cd-rom) to deselect it.
Click the Browse button and navigate to C:\Windows\System32\Drivers.
Click OK > Next.

While it may evolve to be a fact that the "write" component of the drives may have failed. I am less inclined to see that is likely on TWO at the same instant. So don't shoot the horse just yet. Take the two drives(one at a time) and try them on another computer (not necessary but if the other computer uses different burning software that would be an added bonus)The internal one doesn't need to be actually installed as long as the appropriate cables are selected. Is the internal a SATA or IDE? Before you try the above you could try another burning software. There are a number of free ones available (burnaware is one). Any yellow warnings in device manager?truenorth

Tried deleting upper and lowerfilter from the registry? http://support.microsoft.com/kb/314060

I went to the Microsoft link that you gave me and it said to use "if your drive is missing or not recognized by windows or other programs".  In my case they are not missing and they are recognized, but only as players not writers.  Do think that I should still try thay anyways?  I will give it a shot as long as it doesn't hurt anything.

I went to the Microsoft link that you gave me and it said to use "if your drive is missing or not recognized by windows or other programs".  In my case they are not missing and they are recognized, but only as players not writers.  Do think that I should still try thay anyways?  I will give it a shot as long as it doesn't hurt anything.