Block erupters ?
Is java up to date ?
Have you tried Devices/ Probe all ports for external devices ?
asicminer block erupters ,they worked fine for months but since Christmas have been losing them one by one until none work .
The client used to show all 11 working at max speed but upon checking the shifts found out they had not hashed for days .
Now although device manager shows all 11 with updated drivers ,the client only seems to detect 6 .
I have 5 in a 7 port powered D-Link hub ,the other 6 are directly plugged into the usbs on the motherboard ,like I say they work well for the first couple months .
when I try to update java it says it is fully up to date.
I uninstalled the 5 that was not getting picked up by the client ,restarted my computer ,re-installed the drivers one by one and still bitminter client will not detect them .
I just maximised my bitminter client and nothing is showing in it except a picture of my windows desktop .
The client quickly becomes unresponsive and I have to close with task manager