Chosen Solution

Many times RAM issues are that they aren’t snapped in - some times it takes what seems to be a lot of force. Check alignment then be certain they bottom out. Bottom one goes in first tilt it up a bit to align then tip down and push. If the dog-ears (tabs) align and lie flat you’ve got it… if they stick out a bit you missed. If this answer is acceptable please remember to return and mark it.

The power on self-test resides in the ROM of the computer. This test runs whenever the computer is turned on after being fully shut down (the power-on self-test does not run if the computer is only restarted). If a fault is detected during the test, you will not hear a normal startup chime. Instead, the system will beep as explained below. If you experience one of these beeps, you may call your Apple Authorized Service Provider for additional troubleshooting assistance. 1 beep = no RAM installed 2 beeps = incompatible RAM types 3 beeps = no good banks 4 beeps = no good boot images in the boot ROM (and/or bad sys config block) 5 beeps = processor is not usable In addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once. Try installing one stick at a time and doing a complete reboot. Move the stick to the other slot and check. After each time check the “about this Mac and see how much RAM it sees. This will test both the RAM and the slots. Sometimes slots go bad, RAM goes bad, slots will see lower value chips but not larger ones.

i have the same problem…Upgraded my early 2011 13” MacBook Pro from 4 to 8 gb with Patriot Mac Series Memory. Speed etc. has been verified with the published Apple Data for this unit, as well as what the unit itself says. Battery had over 50% charge prior to upgrade. The flashing light in front on right is flashing as it usually does when its charging. The light on the charger connector is amber, indication that there’s less than full charge. It won’t turn on, It won’t even attempt to boot and fail.

YOU HAVE ONLY 1 SQUARE TO UPGRATE MEMORY CARD – MACBOOK NEED 1 ORIGINAL MEMORY CARD -AND 1 TO EXPAND – THE OTHER IS TO RESTORE OR BUFFERING ORIGINAL MEMORY CARD SYSTEM TO NEW CARD BUT THIS IS 80 % IMPOSSIBLE ? JORGE L OVALLES jorgeovalles34@gmail.com

THE PROBLEM IS THE MEMORY CARD- CAN YOU FIND MANY UNWORKING MEMORYS CARD ON THE MARKET-IN 4 GB -TRY EBAY AND HYNIX CARD -MAYBE START-USING 204 PINS-MEMORY CARD-ON MY CASE I USE OLD MODEL ON MACBOOK 200 PIN BUT DONT START WITH 2–MEMORYS CARD OF 4 GB - I TRY CARD HYNIX LEFT AND RIGHT 4 GB CRUCIAL MEMORY CARD THIS START - THE MACBOOK WORK WITH 6 GB BUT DONT WORK TO INSTALL MOUNTAIN LION — jorgeovalles34@gmail.com