Crash while playing Games (MW3 MP, Counter Strike: Source, etc.)

When I play games like Modern Warfare 3 Multiplayer or CS:S my Laptop crashes.
(I am using a Laptop + Desktop, extended display). After some minutes of playing (depends) I get either Option No.1 or No.2:
1. Everything hangs (No taskmanager, etc.) and I see randoms colored pixels on my Desk and I can't even speak to my Buds in teamspeak.
2. I just see just one color and no pixels, at this option I can still hear and talk in Teamspeak, but stuff like taskmanager etc. doesn't work.

Old thread: Direct3DDevice9ent failed: An invalid parameter was passed to the...
Sir karlsnooks told me to move over here. :)

I once managed it to run MW3 in Safety mode and this is what happened:
Attachment 221905

System Specs:
1. 64bit
2. the original installed OS on the system? No.
3. an OEM or full retail version? I can just say that I bought it at the DELL homepage as a private customer.
(OEM = came pre-installed on system)
( Full Retail = you purchased it from retailer)
4. What is the age of system (hardware)? Bought it April 2011.
5. What is the age of OS installation (have you re-installed the OS?) Yes somewhen this month because I thought this was gonna solve this problem had this problem before aswell.

(OS: Microsoft Windows 7 Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
CPU: Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz
Motherboard: Dell Inc. 0NJT03
Memory: 4,00 GB
GCs: (1) NVIDIA GeForce GT 540M (2) Intel(R) HD Graphics Family
SCs: (1) Intel(R) Display Audio (2) NVIDIA High Definition Audi
screen res: (1) 1920 x 1080 x 32 bits (4294967296 colors) @ 60 Hz
hard drive: ST9500420AS ATA Device

Alright that's it, I srsly hope that you guys can help me with this!

Thanks in advance,
Fatcat

I know you guys don't get payed but I don't want my Thread to get lost, so BUMP.

Thread got lost again, bump.

Buuuuuuuuuuuuuuuuuuuuuuuuuump!

Yea, I know that I shouldn't do that and I think I got to stop it now, but I just think that this Thread gets lost, because it was just able to find at page 2 and do you guys even check those pages?, because I really want this to get fixed! :/

... seriously Page 4?

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