SharePoint Server Name Existing

We recently experienced a power outage causing various issues which have all been resolved with the exception of our SharePoint issue. The previous ip address was a x.x.x.06 but after the outage the previous staff who was here did not set it to a static ip address causing it to retrieve a new address of x.x.x.56. Since that time I am not able to change the Ip address because it says its taken but will not appear when doing a nslookup or manually testing each servers ip.  When I did try and change it again today for the purposes of this posting I received the following errors and warnings attached. Thoughts?
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Tim EdwardsIT Team Lead - Unified Communications & CollaborationCommented:
On the second window to save just click no and it will accept that static ip that your giving it
cbarber22Author Commented:
I did do that, but unfortunately it stated that there could be conflicts, etc. When I did do this it wouldn't bring up SharePoint Central Administration or the intranet, and I was forced to revert to the previous IP.  I found out that part of this issue was due to the previous IT Manager/Staff leaving this in a vm environment, and not setting it to a static ip, or to reconnect at power on. Which caused another device to take the ip address during a power outage, causing nothing but a headache moving forward.  I have resolved the issue since yesterday with a new static IP, and clearing of some cache, and removal of an old server which was picking up this IP Address.

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cbarber22Author Commented:
I solved my own issue with a change of ip to static, and also re issuing a new ip to the conflicting server.
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