Will it cause reboot to the server.

Hi All,

In one of our production server, currently we have default setting to the SQL Server memory 2147483647, and the version is Microsoft SQL Server 2008 R2 (SP1) - 10.50.2500.0 (X64) Jun 17 2011 00:54:03 Copyright (c) Microsoft Corporation Standard Edition (64-bit) on Windows NT 6.1 <X64> (Build 7600.

 Customer wants it to set 4.5 GB as mar memory to SQL, Now my question is " when we set it max memory required by customer,  will this(setting Max memory) cause a reboot to the server or have any significant chance of causing a problem since this is production server?

Thanks.