Make sure the memory modules are seated properly.  If the beeps continue, it's likely a video failure.

See:

http://support.dell.com/support/topics/global.aspx/support/dellcare/en/backupcd_form?c=us&cs=19&l=en&s=dhs&redirect=1

i tried to do that several times. i had problem once before and got fixed cause ram modules not seated properly.but no this time. :(

if its a video failure what am i supposed to do now?

andi think backup discs wont help here.

Since it does sound like a video failure, call Dell - they'll replace the mainboard under the extended warranty program.

Thanks, ejn.

I called them and they replaced my mainboard.

No problems now. I am extremely impressed with the service.

Regards

Arjun