.:Disk Read Error:.-but works on other COM-Wat problem

[ArZuNeOs]

my main sys

P4 3.02 ghz
intel 915gavl mobo
512 DDR 400 Mhz Corsair
samsung 120 Sata HDD
WIN Xp Pro SP2

My other sys
D930 ,
D945 Gnt mobo
1 gb DDR2 Trans
Seagate 300Gb sata
Win XP Pro Sp2 & Win Server 2000
Now the problem

My 1st sys's HDD failed Throwing up the error....I used Ultimate boot CD & it showed no HDD devices & da same in BIOS

But when i connected it along with my 300 gb It showed properly ....i loaded win server & was able to view contents for sometime

I also loaded win Server in da old HDD &
tried to use it along wid the 1st sys

But failure ...it showed the same msg

Wat do i do now

Do i have to throw the HDD to the samsung repair center (in chennai....which place) or is there a way out

Ur Experience is asked 4

[assasin]

Connect only the 120GB hdd in the new sys and 300GB in ur old sys and see if dere detected.If the 120Gb is not detected den get it replaced/serviced by Samsung.