Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to clean a cd player [title] Confirm there is no cd in the player. [step] If the cd drive is tray-loaded, open the tray and disconnect the power cable without switching it off from the power button. This will leave the tray open, allowing you access to the slot.

Ending1: [title] Open the drive if you do not see a cd in the tray slot. [step] If there is one, the drive may be in a compartment in the back of the player. Ending2: Once this is done, disconnect the power cable from the tray and discard it. [substeps] If you are having trouble locating the tray in the back of the drives, check your motherboard or nearby wintor system. Ending3: [title] Blow away dust with a handheld air bulb. [step] These rubber bulbs are sold as dust blowers in places that stock cameras or jeweler's equipment. Ending4: [title] Using a box cutter or a precision knife, cut four small segments from the cd drive. [step] Stick these segments in the tray through the holes where the drive is located.

Answer format: ending1/ending2/ending3/ending4