Can't increase brightness!!

Can't increase brightness!!

I have installed latest graphic driver update update for my Intel DG35EC motherboard. the file name is GFX_Win7_64_15.12.75.2.64.1867_PV_Intel.exe. I am using windows 7 RTM x64, the problem is due to this update from intel, i can't increase brightness in some video format..what should i do..? i cannot revert to previous update for my intel graphics because it had flickering problem in windows 7 that is resolved in this update... i play a format that does not allow to increase brightness and that is given below. i have not changed any of the setting anywhere..and there is no problem of codec becuase when i do not install this particulat update..there is no problem of increasing brightness in video of this types..

Format : Matroska
File size : 548 MiB
Duration : 2h 24mn
Overall bit rate : 529 Kbps
Encoded date : UTC 2009-03-10 16:16:48
Writing application : mkvmerge v2.5.2 ('Stranger in your Soul') built on Feb 28 2009 18:58:17
Writing library : libebml v0.7.7 + libmatroska v0.8.1

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.0
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Muxing mode : Container profile=Unknown@3.0
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 24mn
Nominal bit rate : 491 Kbps
Width : 960 pixels
Height : 416 pixels
Display aspect ratio : 2.35:1
Original display aspect ratio : 2.35:1
Frame rate : 23.976 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.051
Writing library : x264 core 67 r1125M 10d6ef0
Encoding settings : cabac=1 / ref=5 / deblock=1:-2:-1 / analyse=0x3:0x113 / me=umh / subme=6 / psy_rd=1.0:0.0 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-2 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=16 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=1 / keyint=250 / keyint_min=25 / scenecut=40 / rc=2pass / bitrate=491 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : Yes
Format settings, PS : No
Codec ID : A_AAC
Duration : 2h 24mn
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Resolution : 16 bits

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