pc hangs frnds

[altamash 0]

my pc hangs at d windows xp pro loading screen

when i remove d power cord of my cd drives (i hv a sony dvd writer & a lg cd writer) it works fine

if i want 2 use my cd drives i have 2 remove my Realtek lan card(internal) thn it works fine

im totally confused

anyone if pls know d solution of any kind of help welcome pls pls pls reply 2me

or mail me altamashsyed@yahoo.co.in

thnx in advance