Why my DVD drive does not read discs at intervals

Q: My DVD drive does not read the disc at intervals, and sometimes a good disk is not readable. Recently, simply do not recognize the plate, lights flash a few off, DOS also can not start. What am I supposed to do?

A: The ability to read the disk is poor or unable to read the disk, optical drive is the most common fault. First check the disc tray above the disc arm pressure is large enough, optical drive with the use of time, the disc arm pressure reduction, resulting in the disc in the optical drive skid, of course, the ability to read the disk is not good. You can press the disc arm lightly when the disc is rotated, and if it improves, you can conclude that the pressure on the disc arm is too small to hold the disc. You can adjust the disc arm gently downward or the disc arm root small spring out of the elongated and then mounted on it.
If the disc arm pressure is normal, it is necessary to deal with the laser head. First look at the bald head of the objective surface is dirty, you can use the Tiger to make a few blows, and then use the lens paper dipped in some anhydrous alcohol cleaning. If still not, we need to adjust the firing power of the laser head, different brands of optical drive adjustment potentiometer position is different, but most of the front side of the laser head, in the adjustment must remember the original position, if not back again, first clockwise rotation, as long as a little bit on the line, if the ability to read a weak is the reverse, Then rotate a little more counterclockwise. In this step, the adjustment must be patient, 1.1 point adjustment. Avoid eating a fat one at a mouthful!