What should i do
Most questions start with what or how, so it is not quite clear what you want, but I give it a try.
Did you try to clean the laser?
Or do you try to play CD's burned in a CD or DVD burner?
These CD's are not compatible with older players, Their lasers were adjusted to the normal CD's, that use a metal layer as a reflective. The CD R and CD RW use a dye, that only has changes in colour, where the laser hit the dye. It is less reflective, so since the CD-R and DC-RW came, most (not all) CD players are made more sensitive. If it is possible t play a "normal" CD, you know hat is wrong.
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