incredably slow hdd

[jebus_fire]

i have recently installed an SATA Hdd with a PCI adapter and i have never seen a computer run this slow. Its like its always loading and makes an extremely annoying load noise as it does it. It is my storage drive and usually where i keep my larger files, which it tends to struggle more with. My other ata hard disk runs perfect. Any ideas would be appreciated.

Thanks in advance

Setup:
Seagate 7200.7 160GB
ALi RAID adapter (PCI)
1GB RAM
Celeron 2.4Ghz

 

[Apokalipse]

I'd say its your adapter. PCI is not extremely fast.

 

[bigstanklo]

I just began having the same problem after my power went out. Storage ATA drive ran perfectly before hand. Now i can still see all my data but the access is painfully slow. Not sure what the problem is because my other ATA drive runs fine.