I think that the clones did have some problems, hence the utter hatred towards clones of any kind. For a proper magic2, you only have to insert the dvd-r, switch off (after tray closes), start up 3-5 seconds later. Either that or hit reset 3-5 times quickly after putting the disc in - worked sometimes. I think it may be a clone if those discs don't work, but it could be bad media. v1-v4's lasers die realtively quickly compaired to v5-v7's, it could be that.
The best advice I can give you is buy a messaih2 from foundmy for $35. IMHO thats worth ditching your non-messiah2 chip and getting the Cadillac of modchips.
v7 & Messiah2
location: Iraq; coordinates: classified; mission: replacement for 'shelled' ps2
v10 & Matrix Infinity
location: my room; mission: Army reserve...