Why my ethernet works for laptop but not PC

Just installed some ethernet jacks. They all connects well to my laptop but none conects to my desktop PCs (2 different ones).

Both PCs had message: cable is unplugged. But I am sure all cables are properly connected.

Could someone tell what's the problem? Thanks in advance.

所有跟帖： 

• 回复：Why my ethernet works for laptop but not PC -daye- ♂ (250 bytes) () 10/25/2008 postreply 20:02:27

• 回复：回复：Why my ethernet works for laptop but not PC -jd78- ♀ (56 bytes) () 10/25/2008 postreply 20:17:37

• 回复：回复：回复：Why my ethernet works for laptop but not PC -daye- ♂ (236 bytes) () 10/25/2008 postreply 20:59:53

• Thank you! -jd78- ♀ (0 bytes) () 10/26/2008 postreply 07:45:11

• 台式机太老，不能自动识别cable种类 ethernet有两种线 -tty- ♂ (125 bytes) () 10/25/2008 postreply 21:23:27

• It's possible. Would an upgrade of PCI card sofeware -jd78- ♀ (69 bytes) () 10/26/2008 postreply 06:18:03

• use the right cable / 那个东西不是软件能搞定的 -tty- ♂ (0 bytes) () 10/26/2008 postreply 06:50:19

• Thanks! -jd78- ♀ (168 bytes) () 10/26/2008 postreply 07:25:15

• re-wired user end jack. it works. -jd78- ♀ (0 bytes) () 10/26/2008 postreply 09:02:30