1394 card problem

after install the 1394 card and can't use
it have a yellow label before the card
and find the following message:

"This device cannot find enough free resources that it
can use. (Code 12)

If you want to use this device, you will need to disable
one of the other devices on this system."

i can use the 1394 card before
but someday when i boot the machine, the yellow label
appear
then i can't use it anymore

My system is
WinXP Pro
P4 2.53
1g RAM
Land card

Thanks for any help!