Can't see computer online - Meraki router

Hi Experts,

I have a Cisco Meraki router with a predefined DHCP Range.

I have a Win 7 Pro PC connected to the router and on the NIC settings for that PC, I have set the IP address purposely out of range, so no other device gets that IP.  This PC hosts a MSSQL DB for the LAN.

This setup has worked for about an year.  However, now the database is still working, but on the Meraki this PC is no longer listed under clients. As well, I use LogMeIn to connect remotely, this PC is no longer online in LogMeIn.  

I don't know if this PC can browse the internet, and I'm going onsite to troubleshoot, but I don't know what to look for.  The fact that the database is still available within the Lan is throwing me off.

Any help will me greatly appreciated.
APD TorontoSoftware DeveloperAsked:
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David Johnson, CD, MVPOwnerCommented:
one would typically reserve an ip address for the MAC address of the machine you want to set a static ip address for.
Reserved IP ranges: IP ranges that are reserved and therefore will not be assigned to clients.  Lists of Reserved IP ranges can be imported from a CSV file.
or

Fixed IP assignments: IP addresses that are allocated to specific devices by MAC address, to ensure that these devices always get the same IP address when they make a DHCP request.  Lists of Fixed IPs can be imported from a CSV file.
https://docs.meraki.com/display/MX/DHCP+service

BTW Meraki covers a lot of different products.

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APD TorontoSoftware DeveloperAuthor Commented:
Thank you
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