[新手救助] 有冇高手可以幫我睇下係唔係我d硬件配搭有問題

部機成日一開多少少程序就變到好慢
成日沒有回應
打機有時會疾
閂game成個畫面freeze係度要慢慢等佢load完
所以想知道係唔係硬件上有問題- -
check過條ram應該冇事
唔知會唔會關隻hd事( WD GREEN版黎,做左alignment)
隻火牛又會唔會有影響?

CPU: dualCore Intel Core 2 Duo E8400
   主機板:Asus P5K/EPU (2 PCI, 2 PCI-E x1, 2 PCI-E x16, 4 DDR2 DIMM, Audio, Gigabit LAN, IEEE-1394)
display:ATI Radeon HD 3850  (512 MB)
HD:WDC WD5000AADS-00S9B0  (465 GB, IDE)(裝OS)
   WDC WD10EADS-00P8B0  (931 GB, IDE)
RAM:KINGSTON 2G DDR2 SDRAM
火牛:GTR牛400W

(用緊WINDOW XP)