atikmdag.sys windows 8.1 computer crash

Apr 29, 2018
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So when I play games for some time my computer freezes and then my whole computer restarts, so i checked on WhoCrashed for information and i got this:

On Sun 2018-04-29 10:45:11 your computer crashed or a problem was reported
crash dump file: C:\Windows\MEMORY.DMP
This was probably caused by the following module: atikmdag.sys (0xFFFFF80053C020C6)
Bugcheck code: 0x50 (0xFFFFC001D3F62000, 0x1, 0xFFFFF80053C020C6, 0x0)
Error: PAGE_FAULT_IN_NONPAGED_AREA
file path: C:\Windows\system32\drivers\atikmdag.sys
product: ATI Radeon Family
company: Advanced Micro Devices, Inc.
description: ATI Radeon Kernel Mode Driver
Bug check description: This indicates that invalid system memory has been referenced.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: atikmdag.sys (ATI Radeon Kernel Mode Driver, Advanced Micro Devices, Inc.).
Google query: atikmdag.sys Advanced Micro Devices, Inc. PAGE_FAULT_IN_NONPAGED_AREA

How can I fix this?