PLEASE HELP! The computer has rebooted from a bugcheck.

[Windows Server]

My computer keeps switching off randomly, mainly when using an internet browser, or Word, Excel or PowerPoint,I have researched to the best of my ability, I don't know what else to do?!The bugcheck was: 0x00020001 (0x0000000000000001, 0x00000f0001b25d90, 0x0000e6725ef1bf4c, 0xffff198da10e40b3A dump was saved in: C:\Windows\Minidump\021125-16265-01.dmp. Report Id: 31746742-c115-4541-bc79-c04f9c66f616.

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