3 Replies Latest reply: May 3, 2011 4:06 PM by QuyenPham
JonathanDS Level 1 Level 1 (0 points)

Hi!

 

My macbook wont turn on! Hope someone can help, and that my long description doesnt scare people off.

 

 

HISTORY:

 

I just bought a used Macbook (white Macbook 4,1 - early 2008 http://support.apple.com/kb/sp5). When I bought it, it was running the OS X 10.5.?? i think. No original CD's came with it when I bought it used, so I did not have the OS on a cd, so I decided to buy the SnowLeopard from the apple store, so I could do a clean install, and get rid of all the old files and settings from the previous user.

 

I inserted the SnowLeopard Disc into the Macbook DVD drive, and noticed that there was some friction that was not supposed to be there when I inserted the disc, but it slided in anyway, and eventually the Macbook recognised the DVD.

 

I reboted the computer and hold down the C button to run the setup. Before I ran the setup, I deleted the "Macintosh HD" partition on the hard drive, and created a new partition called the same. (just so that all the data would be deleted on the computer). Then I started the installation and installed the SnowLeopard OS.

 

The installation went fine, and the computer rebooted, and went into setup where I create my account and password etc..

When the os had started, I tried to get the DVD out of the drive, but it did not work. I tried to eject the DVD in various ways, (itunes, Disc Utility, keybord button etc..), but it peeked out quickly a tiny bit, and then went back in. I decided to not deal with that for now, and let the DVD stay in the drive.

So the OS was installed perfectly fine, and worked fine, I played with it for an hour or so, and also installed a browser and a video player etc. It all worked fine. Then I downloaded the software updates, and I guess that included an update for the SnowLeopard. When I was done playing with it, I clicked the Apple Logo and clicked shut down. Then the computer asked to install the update I downloaded, but I said clicked NO, since i wanted to do it another time. The computer shut down normally, and I left it with the charger plugged in, and went to bed.

 

The next morning the computer would not start when I pressed the power button. Nothing happened.

 

PROBLEM:

The computer wont turn on when I press the power button. Nothing happens.

The computer doesnt seem to be charging when plugged in.

The DVD drive is jammed in some way.

 

STATUS:

The battery indicates full power (when pressing the battery button on the battery, all 5 LEDs light up)

The Magsafe charger LED indicator on the plug does NOT light up when I plug the computer in.

The SnowLeopard DVD is in the drive.

 

WHAT I HAVE DONE:

I have performed a SMC reset by removing the battery and holding power button 5 sec, as described: http://support.apple.com/kb/ht3964 and also done it by holding the Shift-Control-Option key. Nothing happens. And there are still no response at all from the system.

Used another Magsafe charger on my computer, and it didnt work either. Used my own charger on another computer, and it worked fine.

 

 

Could it be the DVD drive that is causing the computer not to start? or does it sound like my computer is fried over night when charging? Could it be the battery not being connected correctly to the rest of the circuit board? Could it be the SnowLeopard messing up, or my drive partition is done in a wrong way?

 

I really hope that someone can help me, or give me a hint in the right direction what to do. I am thinking taking it to the apple store, but if someone has an idea about what could be wrong, and how to fix this, I would really appreciate it!!

 

Thanks a lot for your time!

JonathanDS


MacBook
  • David Bedford Level 1 Level 1 (70 points)

    Sounds like it may be mother board issue, had the same thing on my old iBook some years back. You may be able to get the DVD out by sliding a credit card in the slot under the DVD.

     

    But an Apple authorised repairer seems the best route to me.

  • JonathanDS Level 1 Level 1 (0 points)

    So I managed to solve the problem, and thanks David for your reply. You were right about what you wrote, it must have been a mother board issue. Here is what I did:

     

    Removed the battery and unplugged magsafe, opened up my macbook, and managed to remove the superdrive from the computer (unplugged it from the motherboard, and unscrewed it). With the drive in my hand, it was easier to remove the stuck CD.

     

    I also found two pins (solder like dots) on the motherboard called SMC_RST (I assume onboard SMC reset, but I couldn't find a source online confirming this). I short circuited the dots with a screwdriver for 5 seconds (like when performing a SMC reset with the powerbutton - just guessing here...)

     

    I inserted the superdrive back in the computer and connected it to the motherboard again. I furthermore cleaned off some components on the motherboard, using dry antistatic materal. Some components seemed to be dirty and may or may not have been short-circuited.

     

    I assembled the computer again, and connected battery and magsafe.

     

    When pressing the power button, the computer turned back on again!!

     

    I am not quite sure what exactly made this thing work, but I am guessing either removing the CD or performing the on board SMC reset. Maybe both.

     

    If people have any experience with the SMC_RST i found on the motherboard, please share! I believe som mac models have an actual button soldered on for hard reset!?

    or if people have any experience with a CD drive causing total system failure (like I have described in my first post), please share

     

    and PLEASE be carefull doing what I have done. This is my first macbook, but I do have some experience with laptops and electronics. First of all, messing with the fine electronics (like the motherboard) can cause serious damage to your computer. A static charge from your hand can burn off the little components, and cause failure to the whole system. Remember to discharge yourself regularly or wear an antistatic wrist strap. ALSO by opening the computer and removing components, will get rid of warranty. When removing the superdrive, be carefull not to damage the harddrive cord, bluetooth antenna and other cables covering up screws and the drive.

     

    I would recommend going to the Apple store first

  • QuyenPham Level 1 Level 1 (0 points)

    Mine has the same problem has yours. When I plugged in the power cord, the magsafe indicator light didn't flash either green or orange. I checked the battery; and unfortunately neither of 5 lights was flashing. My macbook couldn't turn on.

     

    So i'm not sure whether the problem is the mother board or the battery. so worry now.