Hello everyone, and good luck with this one!
Sorry for the long post but I wanted to give as much details as possible. I'm offering the maximum, 500 points to anyone that can solve this problem. I'd offer more but 500 is the maximum.
For the past 2 months or so, I was unable to get my XP Pro or Win'2000 Pro to read dvd-rw media after writing to it with 2 different dvd-rw drives. After finding a workaround for that, all dvd media I write to with Nero are successful but always fail the verification. Read on for details and things I've tried so that you don't waste time suggesting something I have already tried...
Let me give you some history first.
I work in IT and have tried everything I could think of to try and fix this problem but it seems impossible now (short of getting a new pc).
I have a Pioneer A05/105 dvd-rw. It worked perfectly for over a year but the last couple of months, all of a sudden it can't read dvd-rw media. If I burn anything onto a dvd-rw disc and reinsert it in the burner, Windows Explorer will show there's nothing on it. Yet I can insert the same disc into my dvd-rom and it reads all the files on it. I can even play the dvd disc in my dvd player without a problem.
I tried formatting and reinstalling XP with SP1 but same thing. SP2 did not correct the problem. Thinking it's my Pioneer drive, I sent it in to Pioneer for warranty service and bought a Benq DVW1610 in the meantime. Same problem! I couldn't believe it. This problem occurs with any dvd-rw media (which I've had no problems with before with my Pioneer drive). Princo, Maxell, Verbatim, Memorex....none of these dvd-rw discs will read from any burner on my system now.
So I tried viewing the dvd-rw disc from DOS 6.22. It reads it no problem. I installed Win'2000 to dual boot with XP. It reads it no problem too, HOWEVER, as soon as I install SP1 or the latest SP4 for Win'2000 the problem comes back. I finally determined that cdfs.sys is the culprit because I extracted cdfs.sy_ from a Win'2000 Advanced Server cd (no service packs streamlined in it) and replaced it in Win'2000 Pro after I installed a service pack and rebooted. Voila, I can read the dvd-rw media again. I tried using the same cdfs.sys in XP and that too works.
So, problem solved but it's a workaround. I can live with that but I'm wondering if it's related to my actual problem now.
I now can't write to any dvd-r or dvd-rw media. I'm using Nero 22.214.171.124 but have tried 6.0 and 126.96.36.199 too. Nero Burning Rom writes the files to the dvd-r usually without an error (usually), but after it does the verification it says it can't read 12 out of the 28 files that are written to it (28 total files, 12 identical). Once it said the files are different rather than saying it can't read the files. Seven straight coasters now after trying different things.
I tried exchanging the Benq dvd-rw 1610 for another 1610 thinking it might be the drive but same problem! I tried everything short of getting a new pc. Even a clean installation of XP or Win'2000 (I tried both), fails the file verification. The files I'm copying are zips and rars. I sfv'd them and they're CRC error free. They also unzip without a problem on the hard drive. Hard drive is SATA. I tried changing the IDE cables too on the dvd-rw drive and even tried resetting my BIOS to default. I even tried using a 420W power supply instead of my current 300W (which was always fine for a year now with my AMD Athlon XP 2500+ Barton core).
I'll recap for you guys so that there is no misunderstandings:
Files write to dvd media successfully but file verification fails after writing files to a DVD-R or DVD-RW disc.
I tried formatting and reinstalling XP or Win'2000 without any sound card drivers etc. so that there isn't some conflict. I just installed Nero 6.0 (tried 6.3) and then did a write. Failed 7 dvd-r discs in a row now. I tried a simulation followed by a write and that goes through fine, until it verifies the files written to the cd. I tried inserting the disc in my dvd-rom and copying the files but it can't read most of them.
I don't know of any other software I can try. I have Roxio Easy Media Creator v7 (the newest one) but it won't let me open the dvd section. It says Loading, then the window disappears and I'm back at the main Roxio menu. I will be returning it to Roxio. I can try other software (I don't know what else I can try though) that will write files to dvd but I want Nero to work as it's the best.
So I don't know if this is a software or hardware problem. And I scanned for viruses and spyware with the latest definition files to see if there's virus on one of the other partitions but it's all clean.