I have a similar problem with my 4160B, although not identical. I purchased the drive from a reputable (you can generally never be too careful here in Bangkok) retailer, and other than the general "won't burn anything other than recommended media" gripe, I haven't had any major problems with it, until recently. I consider myself fairly computer savvy, although not when it comes to optical drives, so I'm rather frustrated at this point. Here's the beef, if anyone can help:
Recently, the drive will not read (or recognize) any disc I insert, with a caveat: I have a Kyowa DVD lens cleaner disc that, if inserted before Windows boots, will be recognized and is playable. Other than than, no CD or DVD, burned or otherwise will play, even after the lens cleaner is recognized. Again, another caveat: it seems that sometimes in the morning the blasted drive will function properly, which leads me to believe it's a heat-related problem. Interesting, because it's never done this before and I have beaucoup fans in my computer. Here's the trouble that I've shot so far:
UDMA, working, mode 4
Drive recognized by WindowsXP Home properly
Firmware: latest, A302
My rig is fairly old, I use it for audio production (amateur) and consists of an AMD Athlon 1800+, 512 megs of DDR333, an Asus A7S333 mainboard, nVidia AGP dual head graphics card, sundry other PCI cards (network, USB 2.0, modem,) no major IRQ conflicts, and the GSA-4160B is slaved on the first IDE channel to a Western Digital HDD I use for the system drive. The secondary IDE channel is a swappable IDE interface (I have 2 more WD disks for audio and archive) and an LG GCE-8520B CD-R/W drive slaved to that.
Anyway, if anyone could help, I'd be grateful...I'm new to this forum, as far as posting goes. I guess I'll get my room fan and blast cold air at the drive to see if that helps. The problem is that I can't get it to replicate its behavior consistantly. Just when I think it's totally shot, it kicks in.
Thanks for any help and sorry for rambling,