Question about Apple MacBook Pro Laptop Computer with Intel Duo Core 15.4 Inch PC Notebook
The screen does not open up (all black) and all i hear is the fan shishing thru the speakers.
After my macbook pro has been closed for a short time and then I open it up, the screen is black and all I can hear is the fan going. When I turn on power button, I hear fan start and a slight sound from Cd drive but then it sits with power light on in front but no OSx symbol, no key response only the fan.
Try and reset your PRAM and VRAM here is some infor for you.
Summary This document explains how to reset the parameter random access memory (PRAM) and nonvolatile RAM (NVRAM) on Macintosh computers.
Important: If your computer does not retain parameter RAM (PRAM) settings when it is turned off, this generally indicates that the battery needs to be changed. Refer to Macintosh Family: Batteries and Part Numbers.
Products Affected Portable Computers, Desktop Computers
Resetting PRAM and NVRAM
Resetting PMU on PowerBook or iBook computers In some troubleshooting situations, if resetting PRAM does not resolve an issue, resetting the PMU may be the next appropriate step. For information on when this is appropriate and for instructions on how to reset the PMU in your PowerBook computer, see Resetting PowerBook and iBook Power Management Unit (PMU).
Additional Information Resetting NVRAM in Open Firmware If your computer is Open Firmware-based and you are unable to reset NVRAM as described above, you may alternatively reset the NVRAM and Open Firmware settings using the steps in the Solution section of Message “To continue booting, type 'mac-boot' and press return”.
Contents of PRAM Some Macintosh computers may not have all the settings described below. For Mac OS X information, refer to Mac OS X: What's Stored in PRAM?
Posted on May 19, 2008
Please clean-up the RAM modules wiping it with a dry cloth and re-insert it back into its slot .
Posted on May 07, 2008
SOURCE: No screen activity on startup
I suggest you first do a test to determine if it is your macbook's screen or graphics processor which is at fault. To do this you need to connect an external display to your macbook.
The macbook has a mini-DVI port for connection to external displays. Depending on the connector of the external display you use to do the test, you are either going to need a mini-DVI to DVI adapter (for a DVI display) or a mini-DVI to VGA adapter (for a VGA display). These adapters are sold separately by Apple, see http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?nnmm=browse&mco=669DFFE0&node=home/shop_mac/mac_accessories/displays
If an image is displayed on the external display after you have connected it to your macbook, you know that the screen of your macbook is faulty. In this case it would be an economical option to take the macbook to a repair shop where a technician can determine the faulty component (either one of the following display components of a TFT LCD screen can fail over time; the inverter, the backlight or the cabling). These can be replaced under warranty or they can order new ones if the warranty has expired.
If the external display shows the same symptoms as your macbook's display, it is the macbook's graphics processor which is at fault. I'm sorry to inform you that I think this is the cause of your macbook's display problem. Replacing the graphics processor of your macbook entails replacing the motherboard.
If the macbook is still under warranty I suggest you replace it and let technicians migrate your data from your current macbook's hard disk to your new one.
If the warranty of your macbook has expired, it's a more economical option to buy a new one and migrate your data to the new macbook. This will only cost a few dollars more than the cost of replacing the faulty motherboard (including the service costs of the repair shop to which you take your macbook), but is still more economical seeing as how you get a new machine which has a full warranty.
I hope this is helpful information and thanks for using the FixYa services
Posted on Feb 13, 2008
SOURCE: MacBook won't start up.
If you have your Mac OS X Install disc, insert it into the drive.
Restart the computer and hold down "C" while booting.
Choose your language.
Select "Disk Utility" from the "Utilities" in the menu bar.
Select your Macbook's hard drive in the left sidebar.
Click the "First Aid" tab thats along the top of the viewer window.
Click "Verify Disk" (not verify disk permissions)
If this shows errors click "Repair Disk"
Once completed close the Disk Utility window.
Restart the computer.
If this fails to fix it as well then your next option would most likely be recovering your files from the macbook either by booting into target disk mode (hold down T at startup) and transferring them via a firewire cable, or removing the hard drive and hooking it up to another Mac to get the files. Then do a clean install of Mac OS X using your installation discs.
Posted on Feb 15, 2010
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