Macbook Pro 13" won't boot after changing ram.

So i ordered a 4Gb corsair ram for my Early 2011 MBP 13" and tried installing the same. I already had 2 x 2Gb sticks on it. I removed one 2Gb stick and added the 4Gb stick but now my systems wont boot at all. No sound, it won't even charge. i tried putting in the old ram and boot, but even that isnt happening now. Is there anything i could be doing wrong?

Sorry for a late update.
Went to the apple store and they fixed it for me in under 10 minutes. Said " It had nothing to do with the RAM, some issue with the battery".
Now i have 6 gigs of ram on my MBP .

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Mac Pro 2010 Won't boot after adding Ram

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FYI, when I did install the Registered or "buffered" 8 Gigs of Crucial Ram by themselves the system did boot up normally and a memory notification popped up and said that my ram was in the "correct" or "suggested" configuration. I can't remember the exact phrasing but the OS definitely gave me a thumbs up. So now I am trolling the web trying to find out if the Registered memory is ok. I'm fine to just have 8gigs for now. But don't want to jeopardize the stability of my system. So, Is it ok to use Registered memory and if it is, am I using a lesser quality of ram in doing so?

MacBook Pro 2011 won't boot

My early 2011 MacBook Pro 15" won't boot. Second time dealing with this this year. Apple Store charged me $300+ to fix it the first time. It worked for a few months, but stopped working again. Took it to the shop again and asked them to fix it for good this time. They wanted to charge me $310. I said NO. why would they charge me twice for a repair I asked them to do before? How widespread is this problem? I know for a fact I'm not the only one dealing with this problem.

What have you done to define your problem? Look at this comprehensive troubleshooting article and perhaps you can find a solution:
https://discussions.apple.com/docs/DOC-3353
Note that Apple repairs are guaranteed for 90 days.
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Try Resetting the PRAM

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My Macbook Pro either won't boot or would crash a few mins after booting

Hi everyone, I'm having some problems with my Macbook Pro with Mac OS X 10.6.8 here.
It all started when I was just browsing the internet normally (with spotify web player on, if that's of any use) and a screen of black and white stripes appeared. I shut the computer down and tried to turn it on a few times but it would either just be stuck on the blue screen, or would boot but as soon as I opened Chrome the screen would just freeze (pointer won't move, caps lock cannot switch).
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The only thing left to try is reinstalling the OS but I dont really wish to erase my harddisk. Would it be a good idea to do this or would it only fail on me? I'm thinking of bringing it to an Apple repair but wish to solve this problem at home where possible.
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berayen,
if you have Mac OS X 10.6.8 installed, then OS X Internet Recovery is unavailable to you.
Which model MacBook Pro do you have?

OSX Mavericks won't boot after changing user home folder

Hi guys,
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Hmm, I hadn't tried booting the system restore CDs that came with it. Turns out they work just fine. The two CDs I was trying to boot (but aren't working) are:
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My macbook pro 17" won't boot with internal or external

Hi there,
Having some trouble with my 17" Macbook pro. It's the 2009 version.
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berayen,
if you have Mac OS X 10.6.8 installed, then OS X Internet Recovery is unavailable to you.
Which model MacBook Pro do you have?

HELP! MacBook Pro 17" Won't Boot-Grey Screen-Errors During Verbose Safe Mode Boot

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http://i43.photobucket.com/albums/e389/RIPNHL2005/photo_zpsb0d8d5cf.jpg
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Is this the right drive config for the macbook pro?
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HGST
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If you're not in the US, you may need to go through the regional Apple Store that serves your location to find the contact number. Here's a list of links to all of those - http://store.apple.com/Catalog/US/Images/intlstoreroutingpage.html Another resource: International Support Phone #s.

My quandary is how to transfer EVERYTHING from a Macbook pro that won't boot up to a new one, will the usual linking with a firewire lead still work?

I have an early intel Macbook Pro that wouldn't wake from sleep and won't now boot up, i'm just going to replace it with a new 13" i5 but i need to transfer the last five years of my life off the dead one to the new one, there's nearly 3 grand of music software and mp3's before i even think about the 10 years of photographs and videos, some of it is backed up but i ideally want to just transfer it all over.
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Since the old MBP is dead the only option is to remove the hard drive and use a SATA/IDE to USB adapter to get all your stuff off the old drive.
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You might try a PRAM reset and see if this does any good.
http://support.apple.com/kb/HT1379?viewlocale=en_US
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Help: Macbook Pro Retina won't boot past Grey screen w/ Logo

All,
My computer died last night with each application not responding. I couldn't shut down normally so I held the power button to turn it off.
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4HDD/11/40000000: SATA (0,0)
The screen shot is below
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That's what I thought but was able to do CMD-R and verify/repair permissions the disk. My hard drive is actually a flash drive so I'm guessing the controller or motherboard.
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Macbook Pro 13" won't boot after changing ram.

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