Please look first which CD drive is installed in yours.
if it is an old original one vam 1205 / 1206 we will find solutions for repair.
if it is an original replacement of B&O vam 1250/21lf it is possible to repair but then you have to buy a hole new cd mechanism.
you don´t get working lasers aftermarket or from philips anymore.
you have to buy an original one from B&O as long they have some. Arround 250€
work will be the same but you have to know if this one is to expensive for repair.
hopefully it is one of the older ones.
please look first and we will see what to do.
to get to the cd mechanism you have to remove the clamber and during that you can look for any wrong installed screws.
another possibility is that the clamper makes to much pressure to the cd mechanism.
when you get loosen the silver plastic cover from the clamper to remove it you will find two small imbuss screws on each side.
these you can use to set the clamper to the right position (up an down)
try to get it parallel to the aluminium plate or even a little bit more up to the glass.
is the noise still there?
if it is a vam 1250/21lf try to look at the small solder bridges to the laserdiode.
they can brake. hard to see. use a magnifying glass.
this could be repaired py soldering this broken ones. very very carefully.
this problem i had a few times on mk 3s where the vam 1250/21lf is installed