Windows Server 2012

Hi,

I have a new 2012 server and 4 new Windows 8 Pro workstations in a new domain. Every day since we went live the network drops out locally and on the internet. I have the the following configuration:

Netgear DGN2200 ADSL router plugged into a Netgear Gigabyte switch.
The server and the 4 PC's plug into the switch.

Router: 192.168.5.1
 Internet Port
MAC Address      E0:46:9A:63:85:78
IP Address      149.135.2.241
Network Type      PPPoA
IP Subnet Mask      255.255.255.255
Gateway IP Address      165.228.7.1
Domain Name Server
203.50.2.71
139.130.4.4

2012 Server:
IP: 192.168.5.10
SUB: 255.255.255.0
GW: 192.168.5.1

DNS1: 192.168.5.1
DNS2: 192.168.5.10

I have given all the PC's static IP addresses with the following config: (with different IP's)
 IPv4 Address. . . . . . . . . . . : 192.168.5.32(Preferred)
 Subnet Mask . . . . . . . . . . . : 255.255.255.0
 Default Gateway . . . . . . . . . : 192.168.5.1
 DNS Servers . . . . . . . . . . . : 192.168.5.10
  DNS                                      192.168.5.1
 NetBIOS over Tcpip. . . . . . . . : Enabled

I ran the BPA analyzer on the server and got these results:

CC-SERVER      Error      DNS: The DNS server 192.168.5.1 on Ethernet 2 must resolve Global Catalog resource records for the domain controller      Configuration
CC-SERVER      Error      This domain controller must register its DNS host A/AAAA records      Configuration
CC-SERVER      Error      This domain controller must advertise as a PDC for the domain      Configuration
CC-SERVER      Error      This domain controller must advertise itself as a generic global catalog server for the forest      Configuration
CC-SERVER      Error      This global catalog server must register its host (A/AAAA) resource records for the forest      Configuration
CC-SERVER      Error      This domain controller must advertise as the global catalog server for the forest      Configuration
CC-SERVER      Error      This domain controller must register its Rfc1510UdpKpwd DNS record to advertise itself as Kerberos Server for the domain      Configuration
CC-SERVER      Error      This domain controller must register its Rfc1510Kpwd DNS record to advertise itself as Kerberos Server for the domain      Configuration
CC-SERVER      Error      This domain controller must register an alias (CNAME) resource record with its DsaGuid for the forest      Configuration
CC-SERVER      Error      This domain controller must register its Rfc1510UdpKdc DNS record to advertise itself as Kerberos Server for the domain      Configuration
CC-SERVER      Error      This domain controller must register its Rfc1510Kdc DNS record to advertise itself as Kerberos Server for the domain      Configuration
CC-SERVER      Error      This server must advertise itself as a domain controller for the domain      Configuration
CC-SERVER      Error      This domain controller must advertise as a KDC for the domain      Configuration
CC-SERVER      Error      The PDC emulator master CC-SERVER.Cleveland.local in this forest should be configured to correctly synchronize time from a valid time source      Configuration
CC-SERVER      Error      This domain controller must register a DNS SRV resource record, which is required for replication to function correctly      Configuration
CC-SERVER      Error      This domain controller must register its DNS host (A or AAAA) resource records for the domain      Configuration
CC-SERVER      Error      This domain controller must advertise as a global catalog server for the forest in its local site      Configuration
CC-SERVER      Error      This domain controller must advertise itself as a generic global catalog server for the forest in its local site      Configuration
CC-SERVER      Error      This domain controller must advertise itself as a Kerberos server for the domain in its local site      Configuration
CC-SERVER      Error      This server must advertise itself as a domain controller for the domain in its local site      Configuration
CC-SERVER      Error      This domain controller must advertise as a KDC for the domain in its local site      Configuration
CC-SERVER      Error      This domain controller must advertise as an LDAP server for the domain in its local site      Configuration
CC-SERVER      Error      DNS: The DNS server 192.168.5.1 on Ethernet 2 must resolve names in the primary DNS domain zone      Configuration
CC-SERVER      Error      DNS: The DNS server 192.168.5.1 on Ethernet 2 must resolve names in the forest root domain name zone      Configuration
CC-SERVER      Error      DNS: The DNS server 192.168.5.1 on the Ethernet 2 must resolve PDC resource records for the domain controller      Configuration
CC-SERVER      Error      DNS: The DNS server 192.168.5.1 on Ethernet 2 must resolve LDAP resource records for the domain controller      Configuration
CC-SERVER      Error      DNS: The DNS server 192.168.5.1 on Ethernet 2 must resolve Kerberos resource records for the domain controller      Configuration
CC-SERVER      Error      This domain controller must advertise as an LDAP server for the domain      Configuration
CC-SERVER      Error      DHCP: The server database should be functional and free of errors.      Operation

When I setup the server I just did the default settings.
Do I need to add stuff to DNS

The server keeps changing from Domain to Public

I have also turned DHCP off on the server.

If I restart the router, switch, server and workstations it comes right.

If I haven't set the server correctly up can anyone give me some pointers

Thanks

Andrew