DELL XPS 8300 Display driver amdkmdap stopped responding and has

desktop xps 8300,
window 7 home premium, service Pack1
64 bit

Display Adpater:
 AMD Radeon HD 6450

最近,看youtube时,经常会有event as

 

Display driver amdkmdap stopped responding and has successfully recovered.

几次以后,就blue screen.

driver already update.

请高手指教,谢谢。
 

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