Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 31

2010-06-15 Won't Start Up Unlikely cause: display assembly, speakers, fan, camera, microphone Quick Check Symptom Quick Check Power but No start up • No startup chime, some video activity, Apple logo, startup spin dial • Startup chime with possible beep tones. • Fan, hard drive spin or optical drive reset sound • Sleep LED is on , blinking or went out • Caps Lock LED toggles when pressed 1. Reset SMC. 2. Verify startup process passes initial memory checks - no beep errors or flashing sleep LED indicators. Display activity is starting up. 3. Clear PRAM. Verify starts up from user drive. 4. Connect known-good external bootable device and press Alt key during startup then select external startup device to bring up system for diagnostics. 5. Verify presence and status of user hard drive. Use Disk Utility to repair drive and file permissions. 6. Start up in Safe Mode by pressing power button and holding down Shift key when you hear startup tone. Deep Dive Check 1. Reset SMC and Clear PRAM to set default startup device to internal hard disk drive (HDD). Result Yes No 2. Is system indicating a memory Yes error with repeated sleep LED 1 or 3 flash sequence and beep tones if sound is enabled? No Action User hard drive bootable, issue resolved default settings. Customer system not starting up, go to step 2 Troubleshoot memory issues, go to step 3 Continue with startup sequence verification go to step 4 Code MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Startup and Power Issues 31