1394A external device can't be recognized

techo

hi All,

- h! N8 {! [( ?1 cis there any one had experienced 1394A external device can't be recognized under OS?

" M( ?9 }% v6 Y- dI encounter this kind of issue recently.
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' S: q: P2 S) C, X9 n0 n7 H& vOS is Vista & XP.
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1 Q/ j% ^4 p0 h1 [1394A controller is Ricoh.
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the situation is I could see the removable icon shown on the system tray but there is no device in OS device manager.

indeed there are some differents but I don't know why.

* ^( o! e8 K6 B: S6 i0 n. uI wonder it's caused by BIOS but how to prove it?

4 Y& B9 I% C. L- i3 Eis there any spec or document could let me refer to?

Thanks anyway!