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help me！PC can not detect my pcie board

Altera_Forum
Honored Contributor II
‎11-07-2014 12:16 PM
1,020 Views

I use Quartus II 13.0,Arria II GX,PCIE x4 hard IP, 

most PC can detect my PCIE board,but one PC can not. no matter start or restart the PC. 

the ltssm state is always 0->1->0->1->0->1->......the time of "0" is 12ms,the time of "1" is very short 

never enter polling state,what should i do? can some one help me?
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