Problem with Seagate Barracuda

[Aleena]

Hi guys!
I have a PC with an Intel Pentium 4 1.5GHz, on an Intel D845WN Motherboard. The H.D.D was a Seagate 20GB. I have a Geforce4 MX440 (64MB, AGP8X) Graphics Card and a Creative Sound Blaster Audigy Live 5.1 Soundcard. The PC contains two optical drives, a Samsung 32x CD RW and a Samsung 16X DVD ROM Drive.
Recently I bought a Seagate Barracuda 120GB H.D.D and connected as secondary slave. My 20 GB H.D.D is secondary master. CD RW is primary master and DVD Drive is primary slave.
After connceting the Barracuda I am having strange problems like suddenly hanging the computer and missing the new hard disk on restart. What will be the cause of my problem? Is there any incompatibility? Please help me. My SMPS is 300w. And I have installed two additional cooling fans for my cabinet.

[Aleena]

i forgot to mention my memory. it is 256MB of SDRAM.

[wORm]

Conventionally people put their HDDs on the Primary IDE, you should do so aswell, might solve your problem.

[amistik]

Aleena,

You can do following things -

Put your Hard drives in primary ide controller and optical drives in secondary. Coz Primary support UDMA100 mode and 80 conductors cable where as secondary generally support PIo standard. Result - you can use full potential of new barracuda drive (UDMA5,7200rpm)

Auto detect the hard disk and after that chose "User" instead of "Auto" in CMOS setting.

Check the jumper setting properly of master disk. It should be in "master" position, not in cable select position.

Hope this may work.
By the way you did not mentioned your BIOS and its version. It may cause problem for large hard disk.