URGENT: Need to stop screen flicker (PWM) on T420s with IntelPWMControl

I see other users have managed to use this program 'IntelPWMControl' to stop their LCD screen from flickering (PWM) on their machines with intel HD graphics:
www.youtube.com/watch?v=ycKzTDnTYTQ
Another useful thread, outlines how to do this
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/Thinkpad-W530-display-hurts-my-eyes/td-p/13892...
I tried the said link (from the above thread), but on my T420s (Windows 7 x64), it doesn't run at all. In fact it says something about a C++ Exception. I have tried Intel HD drivers from 2013 and 2012 which are purported to work, but nothing seems to.
Can anyone running this, confirm which windows version and driver they are using?
I need to fix this ASAP as I rely on my T420s for work on a daily basis and it's giving me bad headaches...

I'm running 9.17.10.4101 right now and it works fine.
I recall getting that C++ assertion error or something at some point, but don't quite recall how I fixed it.
If you right-click the EXE, and go to the Run with Graphics Processor submenu, is it defaulting to the discrete or integrated card?
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

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  • Screen shot of the t420 with 1600x900

    Could someone with a t420 with 1600x900 resolution provide a screen shot of their screen?
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    Hi,
    I'd approach this task as follows:
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    - just to be sure, restrict the results list to 'Collaborative Document'
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    Jānis

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  • CS5 AS2 mac projector screen flicker–no flicker from CS3 projector

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  • Macbook pro retina screen flicking problem

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  • Suggestion urgently needed, DigitManipulation for forwarded calls

    Hello community,
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                           Transfer Capability = 3.1kHz Audio
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                           Transfer Rate = 64 kbit/s
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                           Plan:ISDN, Type:International
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    Fixed it with the help from a very clever colleague, thanks again to him :)
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