I have Windows 7 x64 running on an ASUS M50VM. The DVD drive works completely unreliably if not at all.
When I first got the machine it came with Windows XP and I upgraded it to Windows Vista X64 and the DVD drive worked fine.
When Windows 7 RC2 came out I tried it on a Virtual Machine and I liked it so much that I upgraded the machine to Win7 RC1. The DVD drive worked fine.
Of course, RC1 started spontaneously rebooting, so when Windows 7 was released I did a clean install of Windows 7. Just to clarify...by clean install I mean I did a format of the hard drive and installed it from scratch.
Ever since then, the DVD drive mostly doesn't work. I can sometimes read from disk but that will often hang. (Please see my description below of hang for details). CD or DVD writes always fails with a hang (I have done a successful write only one time.)
Here is what I mean by hang:
- Explorer Window is unresponsive.
- Any software accessing the DVD drive is unresponsive.
- The DVD tray will not eject.
- Using a paper clip will eject but the disk is usually spinning real hard.
- Attempting to shut down windows will fail. I have waited as long as ten minutes but the whole OS seems to hang. I do a hard shutdown.
- Sometimes accessing the DVD (when it does not cause a hang) will still fail and the device will actually seem to disappear from the system until I reboot.
A couple of other things. It is not a hardware failure. It is the Windows OS. I know this because I swapped out my DVD drive with a friend with the same model...his machine is fine (he is still running Vista X64) and my machine still fails.
For what it is worth, I swapped out my primary disk with the INTEL 160GB SSD.
Here is what System Information shows about my DVD drive
Drive D: Description CD-ROM Drive Media Loaded No Media Type DVD Writer Name HL-DT-ST DVDRAM GSA-T50N ATA Device Manufacturer (Standard CD-ROM drives) Status OK Transfer Rate -1.00 kbytes/sec SCSI Target ID 0 PNP Device ID IDE\CDROMHL-DT-ST_DVDRAM_GSA-T50N________________RR04____\5&2B5B7F1D&0&1.0.0 Driver c:\windows\system32\drivers\cdrom.sys (6.1.7600.16385, 144.00 KB (147,456 bytes), 7/13/2009 7:19 PM)