hangs after printing loading stage 1.5,2

[atul garg]

hi all..
I have a machine with 40 Gb hard disk..
1st partition  20Gb Win 2k
2nd partition  10GB fat32
3rd partition  10Gb "i tried installin redhat 7.2 with GRUB on 
MBR"

now the problem is after installing linux when i reboot my machine 
it hangs in grub printing the following msg.
"loading stage 2"

i tried reinstalling redhat 7.2 but it didn't work..
i tried installing grub again using the linux rescue option and 
using grub commands
grub> root (hd0,2)
grub> setup (hd0)

and now the msg printed is
"loading stage 1.5"
and again it hangs..

can someone help me out..
thanks
atul

p.s:I don't have a floppy drive..