Weird HD Problem

[York1]

At random times my Seagate SCSI HD will click off then spin right back up. This just started recently. It will do it 10 times in a row.Then not do it for days. Powering the whole system down then powering it back up seems to make it worse.

The drive is a 18gig 15K rpm drive on an Adaptec 39160.
Also have a Plextor PX-W1210S on the 2nd bus of the card
The system is dual 2800MPs on a gigabyte board
1.5gigs of ram
IDE DVD writer
4 IDE HDs for storage
Windows XP is installed on the seagate drive

I was hoping maybe someone here might have an idea as to whats wrong.

 

[defakto]

Back up, run diagnostics, hope it's not dying.

 

[unhappy_mage]

What power supply are you using? That could be delivering voltages out of spec and causing the drive to appear to fail before it's actually failed.

 

[York1]

It was the PS. Got another True control 550.
I think Ill save up for something that will last a bit longer than Antec PSs.

Thank you for the help y'all