DVD-RW doesn't like Memorex?

Very odd... I usually buy Fuji blanks, but got a good price on a stack of Memorex CD-Rs, so I decided to try them. But my burner does not recognize them as discs...keeps asking me to insert a disc.
Tried to just play one fromthe same stack that has just been recorded on and formatted with my friend's burner... same deal. won't ask me anything except to insert a disc. In his machine, it works just fine.
All my formatted Fuji DVDs and CDs still work fine, and a blank Fuji gives me a prompt to format, not the "please insert disc" error.
I have a few old Memorex discs that were formatted and finalized on my friend's machine, and they play just fine. Listening to one right now, and now that I think about it, I think I duped this on my PC, with this same unit. Weird.
The discs are 52X type, which normally this drive can handle. The old Memorex disc it's playing right now is also a 52X.
Lite-On's tech support is a joke, and a search has yielded nothing.
Anybody have any idea what's going on here?
Gremlins?
Drivers need updating?
Should I fetch a hammer?
Tried to just play one fromthe same stack that has just been recorded on and formatted with my friend's burner... same deal. won't ask me anything except to insert a disc. In his machine, it works just fine.
All my formatted Fuji DVDs and CDs still work fine, and a blank Fuji gives me a prompt to format, not the "please insert disc" error.
I have a few old Memorex discs that were formatted and finalized on my friend's machine, and they play just fine. Listening to one right now, and now that I think about it, I think I duped this on my PC, with this same unit. Weird.
The discs are 52X type, which normally this drive can handle. The old Memorex disc it's playing right now is also a 52X.
Lite-On's tech support is a joke, and a search has yielded nothing.
Anybody have any idea what's going on here?
Gremlins?
Drivers need updating?
Should I fetch a hammer?