我的電腦配備如下
CPU:Pentium(R) 4 3.0G
MB:ASUS P5LD2
RAM:創見1G*2、512*2共3G
顯示卡:Winfast(麗臺) 6600GT TDH PCI-E介面
但是開機進入Windows後，偶而會出現一個nVIDIA的警告視窗
視窗的標題為：Power Indicator
內容文字為：To protect your hardware from potential damage or causing a potential system lockup, the graphics processor has lowered its performance to a level that allows continued safe operations.

這會是什麼問題呢？