Ralston18 :
Hold off on such things until you can identify some underlying reason or cause for the problem.
Total up all of the device power requirements on your system and add 40%. Compare to the PSU wattage.
Also run Reliability History and Event Viewer to look for any specific error codes or warnings recorded just before or at the time of the crashes.
i think the wattage is enough, after i run Reliability History and Event Viewer i cant still dont know what happend with my pc. its just say like
Description
Faulting Application Path: D:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\games\Watch_Dogs\bin\Watch_Dogs.exe
Problem signature
Problem Event Name: APPCRASH
Application Name: Watch_Dogs.exe
Application Version: 0.1.0.1
Application Timestamp: 543589ed
Fault Module Name: Disrupt_b64.dll
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 543589c5
Exception Code: c0000005
Exception Offset: 0000000004097aa2
OS Version: 10.0.17134.2.0.0.256.48
Locale ID: 1033
Additional Information 1: 9cc0
Additional Information 2: 9cc01ce0f9ac633b39051e02273a7d39
Additional Information 3: faf4
Additional Information 4: faf4dfaaf03193ffdfc9a09fc5ca97ec
Extra information about the problem
Bucket ID: c9a490a2056ffc7f54f18571e97f66cb (1509134074441066187)