Brightness control not working in Windows 8 x64 after sleep with Boot Camp 5.0.2

Hi,
I am using Boot Camp 5.0.2 with Windows 8 x64.
Wheen the computer has been in sleep mode, and wakes up again, the brightness control won't work as expected.
Usually the screen is to dark (darker than before, what it should be), and after some time pops up brighter as it should be.
Has onyone else seen this issue?
I mean, it seems that for brightness we use the internal control GUI of Windows 8, and not the Apple one that is used in Windows 7 and in Windows 8 for the sound control.
Macbook Pro 13" Retina, early 2013 (brand new) with 8GB RAM and 512GB SSD and 3.0GHz i7.

I have been having the issue of no brighness control when running windows through bootcamp for about 6 months now and have not found any applicable solution online.
While messing around trying to figure it out yet again I noticed that my monitor driver was signed by team viewer...
Sure enough clicking the roll driver back button resolved the issue by rolling the driver back to the Microsoft driver...
So long story short:
Right click "My Computer" click properties
Click device manager (lop left of window)
Expand Monitors section
Double Click monitor
Click driver tab
If the driver here is not signed by Microsot or Apple click the roll back button. My driver version is 6.1.7600.16385 (Driver date 6/21/2006)
Rolling this back instantly resolved my issue. I will now propagate this post to all the threads I saw regarding this issue.
I am running windows 7 x64 Ulti on a 15" rMBP.
Best of luck

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