I have a Stealth PC with NIC intel pro/1000PL when I install 5.1 the nic shows connected but will not communicate with the device connected to it (laptop or router) . I have it set up with DHCP and it will not get an address. I put in a static address and it will not communicate with device connected to it. At first I thought it was the hardware but I put 4.1 update 2 on instead and the NIC worked correctly. I then put 5.1 back on and same NIC problem.
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