ATI Mobility Radeon HD 4200 Series overclocking

i'm not able to change values MSi Afterburner to overclock my GPU. Actually i can only decreese it but it slides back when i press apply. I use HP Pavilion dv6 laptop on ati mobiliti radeon hd 4250 with 320 mb dedicated memory and Catalyst 12.4 drivers on win7 x64.
any suggestions?
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More about mobility radeon 4200 series overclocking
  1. Most generic laptops can not be overclocked.

    They are locked on the hardware/lowlevel software level which means that no program can access the settings to change them. Your driver version and OS versions will not make a difference.

    As far as I know; only "gaming"laptops like alienware or origin have the ability to have their GPU / CPU/APUs over clocked.

    Unfortunately you're out of luck.
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