Windows 7: BSOD when playing LoL, 0x0000001e, 0x1000007e

This is my first time using this forum, so im sorry if i do something wrong.

Ive bought this PC about a year ago and havent had any problems with it at all, until recently.
About a month ago i started getting BSODs while playing LoL, i tried recovering the operating system, but the BSOD still exists.
I also tried turning off Intel Turbo Boost and it seemed to help a little, the BSODs stopped occuring for a day or two, and now im getting them again, more and more frequently.
The BSODs only occure while playing video games, usually 20-25 minutes into the game.

Also, here is a screenshot of BlueScreenViewer window, dont know if its any helpful tho:
http://puu.sh/1FBFQ

Hope you guys can help me.

Install Service Pack 1:

• Learn how to install Windows 7 Service Pack 1 (SP1)

Service Pack 1 has provided many security and stability updates for Windows 7, which would be highly beneficial for your system.

memory_corruption doesn't necessary mean that a RAM module is faulty, it can also point to a object which corrupted the RAM at the time of the crash, for instance a corrupted driver or program. Paging files and the CPU caches can also be causes.

Follow these steps -

Test for any corrupted drivers, by running Driver Verifier for least 24 hours, stop the test if a BSOD occurs before this time frame. Driver Verifier will place stress on the drivers within your system, which will cause corrupted drivers to crash and hopefully be pinpointed.

• Driver Verifier - Enable and Disable

More Help and Information with Driver Verifier - Using Driver Verifier to identify issues with Drivers

Memory:

• RAM - Test with Memtest86+

Run Memtest86+ for least 7-8 passes, and preferably overnight as it can take a while to fully complete.

Test each RAM stick individually, if an error is found then move the same RAM stick into the next DIMM slot and test again, if errors are found for the same RAM stick in every available slot then you have a faulty RAM module. On the other hand, if no errors are found in the next slot or the other slots for the same RAM module, then you have a faulty DIMM slot.

Test each RAM stick and every motherboard DIMM slot available.

Thank you for your response!
I will keep you updated as i try these things.

Edit:
Installed SP1, played LoL for about an hour and got another BSOD
This time its a new one
system_service_exception, 0x0000003b caused by driver raspptp.sys

raspptp.sys is a Windows driver, and is not usually the cause of BSODs.

Follow these steps -

Test for any corrupted drivers, by running Driver Verifier for least 24 hours, stop the test if a BSOD occurs before this time frame. Driver Verifier will place stress on the drivers within your system, which will cause corrupted drivers to crash and hopefully be pinpointed.

• Driver Verifier - Enable and Disable

More Help and Information with Driver Verifier - Using Driver Verifier to identify issues with Drivers

Memory:

• RAM - Test with Memtest86+

Run Memtest86+ for least 7-8 passes, and preferably overnight as it can take a while to fully complete.

Test each RAM stick individually, if an error is found then move the same RAM stick into the next DIMM slot and test again, if errors are found for the same RAM stick in every available slot then you have a faulty RAM module. On the other hand, if no errors are found in the next slot or the other slots for the same RAM module, then you have a faulty DIMM slot.

Test each RAM stick and every motherboard DIMM slot available.

Just ran Memtest86 for 14 passes with no errors

It doesn't seem that the RAM appears to be the issue, run Driver Verifier for least 24 hours (further information in above post).

I am currently running it, no BSODs so far.

Post back any results after the 24 hour period, you may stop the test if a BSOD does occur before this time scale

Just got another BSOD after 1.5-2 hours of playing
Although i dont know if i did everything right. I selected all the non-microsoft drivers, restarted the pc successfully and started using it as i usually would (i.e. surfing internet and gaming). Got BSOD after 1.5-2hours of gaming but my pc seem to freeze on the blue screen so i had to manually reset it.
After that i turned the pc on again, disabled verifier and ran the SF tool.

The BSOD didn't point to any real cause, and your drivers seem to be all updated as far as I'm aware.

Why do you have a HP program on a Asus machine?

Graphics Card:

• NVIDIA/AMD Video Card - Test with OCCT

Read all the steps within the hardware test tutorials very carefully, as stress tests is designed run components to their maximum capacity, in order to point out failing or faulty hardware components.

Use the following program to monitor your hardware temperatures during the stress test:

• CPUID HWMonitor

Reduce the number of programs at startup, to avoid any driver or program conflicts:

• Troubleshoot Application Conflicts by Performing a Clean Startup