Thank you for your optimism !!! Well the problem is the reader which as soon as it is on for more than 5/10 minutes, the screen becomes black or gray when reading !!! I did the test on a USB key, I put a serial episode there and therefore turn on the reader which had not worked for 1 or 2 hours, so cold .......... au At first he reads to me what is on the USB key, I continue with a series on a NAS he reads it, I continue with a film he reads it and to the next film a new black / gray screen ........ .i'm trying to read the USB key again, like the black / gray screen .......... the reader had been running for 5/8 minutes ........... ???