ubuntu 9.04 freezes

[arjunen]

I downloaded ubuntu 9.04 iso image, burned it to a cd and installed it on my newly assembled PC.

My PC configuration,

Intel quad core (q9550)
4 GB DDR3 RAM
Nvidia 9400 GT
500 GB SATA

The live cd hangs randomly during installation, I finally got it installed after trying 5 to 6 times. Now it hangs randomly after booting up. Also the mouse and keyboard doesn't work.
Sadly, it is behaving like Windows. :-(

I am really clueless how to troubleshoot and fix this problem. Any help is appreciated.

Thanks

[QIII]

Your specs look fine.

Since you had problems installing, my first instinct would be to wonder if your image was corrupt.

Did you do the md5sum and a disk integrity check?

[arjunen]

Yes, I did the disk integrity check. No errors. Actually I installed the same image on my laptop a couple of weeks back, it works fine on my laptop.

[QIII]

How about a memtest? Even brand new components can be faulty.

I realize that's a PITA, but it might be worth your time. I assume you did the basic stuff like using a ground around your wrist when you built it to avoid ESD, but you never know.

Also might be worth a third check to be sure that everything is seated properly.

Let's eliminate hardware issues, then move on to what else might be wrong.