Computer cannot find bluetooth mouse

I hope this is the proper forum --
I have a new HP ProBook 450 G1, Win 7 PRO (SP1), 64 bit, Qualcom Atheros QCA 9565 Adapter.
It shows B/T as 'on', and I have the icon in the task bar.
When I try to add my B/T mouse, the computer does not find it.
B/T headset installed and working.
Fresh batteries, and my wife's Win 7 PRO computer recognizes the mouse right away.
I have installed drivers from HP, from Qualcom, and from Broadcom, but I cannot get the job done.
What am I missing?

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i3-4000M CPU @ 2.40GHz, Intel64 Family 6 Model 60 Stepping 3
Processor Count: 4
RAM: 3977 Mb
Graphics Card: Intel(R) HD Graphics 4600, 1796 Mb
Hard Drives: C: Total - 461986 MB, Free - 407759 MB; D: Total - 11873 MB, Free - 1305 MB; E: Total - 2040 MB, Free - 2032 MB;
Motherboard: Hewlett-Packard, 1942
Antivirus: Microsoft Security Essentials, Updated and Enabled