I have a Toshiba laptop (specs are in sig) which has Intel HD4400 (i5-4200U). I have installed Windows 10 TP x64 on it. Now some games crash and looking at event logs, it is linked to a GPU driver file (igdumdim32.dll version 10.18.10.3345), which is outdated. I tried to update to the latest version (15.36.7.64.3960) but I get this error:

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Error
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This computer does not meet the minimum requirements for installing the software.
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OK
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I think it's because the OS is Technical Preview. So how do I update it?