HD3000 freezes, airfracts, horizontal lines

Hi
Can anyone help me? I have OSX 10.9.5 (13F1066) on this laptop:
I3 2310M
HD3000
ALC269
AR8151
AR5B97
Here is the console log after restart: http://pastebin.com/vGFySH1N
Its freezing, texture problems in games, random horizontal lines.... When freeze, everything stops, just the mouse moving... please help me thank you, and sorry for my bad english

Try a restart.
Do a backup, using either Time Machine or a cloning program, to ensure files/data can be recovered. Two backups are better than one.
Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.
Isolating an issue by using another user account
Try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear and again when you log in. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer. For each disable/delete, you will need to restart if you don’t do them all at once.
Safe Mode - Mavericks also Yosemite
Safe Mode - About

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Display freezes with horizontal lines, then turns dark

I've recorded a little video to explain my problem better :
http://www.youtube.com/watch?v=23Fs2T7Cjb8
Please don't mind my brother talking in the background and commenting in French about MotoGP umbrella girls
It all started like 6 months ago, from time to time there were horizontal lines visible in the lower-right corner of the display, that disappeared immediately after that I pushed the screen, then 3 weeks ago it started doing that...
My Macbook never fell down, I always transported it in a Be.ez LArobe bag which I believe is rather resistant.
The horizontal lines on the lower right are now permanent, and the freezes are more and more often.
I think there might be a contact problem, since the display gets back to normal when I push it.
Since it's been nearly 2 years that I own my MB and don't have AppleCare, I'd like to know if I can solve this problem without emptying my wallet by having to pay for a new display...
Thank you for your answers and sorry for my approximate English

Thank you for your answer, but actually I forgot to mention that I own a Nov. 2008 13" MacBook Unibody in aluminium (which is now called MacBook Pro, that's why I posted here rather than on the MacBook forum), and it only has one graphic card, thus I can't solve my problem this way.
Also I'd like to add that in my opinion, for what it's worth, this is not a software issue, since when I push on the screen as shown in the video, the artefacts disappear, and when I release the screen it starts again, so I believe it could just be a false contact.
I know that if it is a hardware problem I should go to an Apple Store or a Premium reseller but it would mean a 200km trip at least, and I don't have any backup computer, and I need it for my exams at the moment, so I can't really leave it for 2 weeks to be sent to Apple right now, nor can I afford for a new display if the problem is more important than I thought. I'd just like to know if this can be fixed quickly and without emptying my wallet, if that's not the case well I'll just wait and pray my MB survives through my exams
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Using Apple Hardware Test
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I have a Satellite A100-001 notebook, almost 3 years old, with 3 GB memory ram, nVidia GO 7600 256 MbRam VGA with rather fresh (6 months old) Windows 7 Professional 32 bit OS.
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Jon,
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http://img161.imagevenue.com/img.php?image=29918lines_122708lo.jpg
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http://img142.imagevenue.com/img.php?image=45631lines2_1221119lo.jpg
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Gotcha !
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Does the orientation of the lines change when you rotate the screen?
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Get help with the screen on your iPhone, iPad, or iPod touch - Apple Support
If you see lines, missing sections, discoloration, or poor image quality
Try to restart your device. If you can't restart, reset your device.
If restarting or resetting doesn’t fix the issue, restore your device.
If you still see the issue after you restore, contact Apple Support.
Best,
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HD3000 freezes, airfracts, horizontal lines

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