Sleep Issues with Macbook Pro

Hi all,
When I wake my laptop (15" Spring 2011 Macbook Pro) while it's connected to a power source, I see the screen for a split second before it goes black. Nothing I do will make the screen come back until I disconnect the power source, at which point the screen gets bright again.
However, what's interesting is that while the screen is black, the computer still gets input from the keyboard because I can see things that I've typed in the password field.
Is there any way to fix this?
Thanks in advance!

Reset SMC.
Many power related issues can be resolved by resetting SMC.
http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Best.

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http://support.apple.com/kb/TS1713
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Good afternoon,
We have Verizon Fios as our internet provider. We both have PCs that are connected to the router and my husband has a laptop that connects both via an ethernet cable and wirelessly. We do not have any problems connecting our PCs and the laptop to the Verizon Fios service.
In December of 2007, I purchased a MacBook Pro. For several months, my ability to connect wirelessly with my MacBook Pro was great. However, beginning around March of 2008, my wireless connection began to become sporadic. Now, my ability to connect wirelessly to Fios varies based upon where I am in our home. When in the same room as the router or in the room above the router, my connection is great. I have no issues. In all other rooms, I either cannot connect wirelessly or the connection is sporadic at best.
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You wouldn't happen to be having Kernel Panics when waking your MBP from sleep, too, would you?

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EDIT: this post got removed the first time for not being constructive enough. I've now edited the post.
This is going to be a lengthy post, so bear with me.
2 months ago, I suddenly noticed my MacBook Pro (medio 2009, 15", 4GB RAM, GeForce 9400M) heating up a lot harder than usual. I'm familiar with the heating issues these laptops have, but this wasn't normal. Looking at iStat Pro, I saw my fans almost taking off like an airplane at 5700 rpm, while watching only a livestream on my browser. I know Shockwave Flash takes up quite a chunk of your CPU, but I had never encountered this problem beforehand.
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We're almost 2 months later and 700 euros poorer, still no result. I've brought it in about 6-7 times now, here's a list of what they've tried so far:
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They advised me to install Mountain Lion, which would make the issues with "high-performance sites" go away. I haven't seen much improvement, though.
This whole experience has been quite frustrating, especially now that I'm gonna need my laptop for University again. Isn't there anything I can do? I've paid almost 700 euros and missed my laptop for 2 months, without any results.
I've got more information regarding the issues if needed, ask away. I'm getting desperate.
I've been browsing around the support communites, and found that a lot of people are having issues since they upgraded to OS X Lion. Could this be the case? Should I try downgrading to Snow Leopard?
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Reset PRAM. http://support.apple.com/kb/PH18761
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Start up in Safe Mode. http://support.apple.com/en-us/HT1564
Best.

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Nice Name:
Machine Model: MacBookPro9,1
Name: MacBook Pro (mid 2012) 15 inch
Family name: A1286
Model Number: MD103
Group1: MacBook
Group2: Pro
Generation:
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Screen resolution: 1440x900 pixels
Colour: Aluminium
Production year: 2012
Production week: 13 (April)
Model introduced: 2012
Memory - flavour: DDR3-S-1600
Memory - number of slots: 2
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Factory: C0 (Quanta Computer (Susidiary = Tech Com))

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