DC hang DNS issues need help?

This just start happening then all PCs start slowing down and lock up&.I go on the server its hang everything is real slow so I reboot the server gets to the desktop it hang on preparing a network settings for a while then I logon to the server I find DNS event ID 4016 under DNS. I cleared DSN cache now some people can access the internet and other cant&. how can I fix this issue?

TITGAsked:
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Chris DentConnect With a Mentor PowerShell DeveloperCommented:

Normally it's not a problem. Except in very very big domains DNS and DHCP are very light weight.

For DNS there are other disadvantages to splitting it onto a member server:

1. You lose AD Integrated Zones
2. You lose Secure Dynamic Updates

Do you only have the one Domain Controller?

Chris
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TITGAuthor Commented:

The server lockup where I have to power it down from the power button
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Chris DentPowerShell DeveloperCommented:

Any Event Log errors? And does DCDiag / NetDiag show any errors?

Chris
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TITGAuthor Commented:

no errors and it hasn't been happening since then...This server currently runs the DHCP, DNS as well would it be ideal/possible to run DNS and DHCP on a none domain controller sever to eliminate down times like that?
   
 
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TITGAuthor Commented:

What is the best way&I have one domain and 2 DCs. DC1 the one it was acting up a physical server hold DNS and DHCP, seconds DC DC2 VM and a member server set as a 2nd  DNS server. All users documents are all redirected to DC1 via GPO so Im creating a new file server because when DC1 hung things was real slow all over the network
 
Thanks
 
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