Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to repair a laptop displaying a no display error [title] Check the ram. [step] A bad ram could be the cause. [title] Remove the ram.

Ending1: [step] Once there is no ram, the device needs to be manually replaced. The device must be screwed into a properly removable screw. Ending2: [substeps] If you have two rams then remove both, and place back only one ram. Try them individually, then check the display. Ending3: [step] After repairs are complete remove everything from the computer. A damaged cd, flat case or lead mounted upside down should usually be removed. Ending4: [step] Do this if the insertion of the two uic4 linux ports is current, if your computer cd-rom does not work, if your pikmin ports were deleted. [title] Screw the too-screwed-on and outer ports back in.

Answer format: ending1/ending2/ending3/ending4