Why does my MacBookPro not power up on AC power or battery?

Facing a completely unresponsive MacBookPro is indeed alarming. Here’s what may be happening: 1. Charger and Cable: Double-check that your charger and cable are intact and compatible with your MacBookPro. Apple cables sometimes wear out internally. 2. SMC and NVRAM Resets: Execute an SMC reset by shutting down your MacBook, holding down the Shift+Control+Option keys along with the power button for ten seconds, and then releasing all keys at the same time. Perform an NVRAM reset by restarting and holding the Option+Command+P+R keys simultaneously. Release after about 20 seconds. 3. Battery Health and Age: Over time, batteries degrade, impacting their efficiency. If the battery is aged or has extensive cycles, it may need replacement. 4. Internal Hardware Issues: Component failures, possibly due to logic board or power delivery system problems, need professional attention. Scheduling an appointment with an Apple Genius Bar or certified technician can pinpoint the exact cause.

As someone who has faced a similar issue, I can share a few insights: 1. MacBook Adapter Test: Even though your charger works with another device, ensure it’s compatible with your specific MacBookPro model. 2. Perform a Diagnostic Test: If your MacBook powers on sometimes, boot up the Apple Diagnostics by holding down the ‘D’ key while turning on your device to identify potential hardware issues. 3. Battery Health: If your MacBook has removable batteries, try a new one to see if the issue persists. 4. Inspect Indicator Lights: Sometimes, indicator lights can give hints. If lights on the charger or MacBook are blinking abnormally, it might indicate a specific issue. 5. Safe Mode Start: Attempt to boot in Safe Mode by holding the Shift key to see if your system boots up on a minimal operating state. Since it could be a complex issue, consulting with an Apple technician might be necessary.

Perhaps you’ve encountered a perplexing issue with your MacBookPro. Here are some thoughts: 1. Verify the Outlet and Cord: First, ensure the outlet you’re using works by plugging in another device. Inspect the power cord for signs of wear. 2. Reset the SMC and PRAM: Sometimes, a simple reset of the System Management Controller (SMC) and Parameter Random Access Memory (PRAM) can resolve startup issues. 3. Hardware Inspection: If your MacBookPro is still under warranty, take it in for a professional examination. The battery or the logic board might need replacing. 4. Check for Physical Damage: Inspect your MacBookPro for any signs of physical damage which might affect internal components. Remember, a professional assessment is highly advised when hardware is potentially involved.

Your MacBookPro not responding to either AC power or battery might be due to several underlying problems: 1. Electrical Faults: Check for any visible damages on the power cord and adapter first. 2. Internal Hardware Issues: There may be problems such as a faulty logic board, malfunctioning power circuitry, or a dead battery. 3. Corrupted Firmware or Software: On rare occasions, a software or firmware corruption might prevent startup. An SMC or NVRAM reset might help here. Visiting an Apple Genius Bar could provide a more accurate diagnosis and help you understand the necessary steps to repair your device.

When a MacBookPro refuses to turn on with both AC power and battery, the issue can feel overwhelming. In my experience, here are several possibilities to explore: 1. Power Source Verification: Ensure the wall outlet works by plugging in another device. Inspect your power adapter for any visible damage or wear. 2. SMC and NVRAM Resets: These are common troubleshooting techniques. Perform an SMC reset by shutting down the MacBookPro, then, while holding down the Shift+Control+Option keys along with the Power button, wait 10 seconds, then release. For NVRAM, restart holding Option+Command+P+R for 20 seconds. 3. Battery Check: Battery health is crucial. A completely dead battery might not even let the laptop start with an adapter plugged in. If possible, try a known good battery. 4. Internal Components: Issues like a faulty logic board, damaged I/O board, or internal power circuitry can prevent startup. Look for an authorized technician for deeper diagnostic. 5. Physical Damage: Any drops, spills, or prior accidental damage could now be causing major internal issues. Remember that diagnostics by a professional are often the best route to pinpoint the problem accurately.

The issue of your MacBookPro not powering up on AC power or battery can be quite distressing. Here are a few possibilities to consider: 1. Problem with the Power Adapter: Even if your power adapter charges another device, test it with another MacBookPro to ensure it works specifically with your model. 2. Battery Issues: The internal battery might have failed. Even though the adapter should supply power directly, a completely dead battery might still influence the system. 3. Logic Board Failure: The logic board, which manages the power system of your MacBook, could be malfunctioning. 4. SMC Reset Needed: An SMC (System Management Controller) reset can sometimes revive a seemingly dead MacBookPro. Consider visiting an Apple Store or authorized repair center for a thorough diagnosis.