Norma,
Not sure I'll be able to help you since things can get a little bit technical, but we'll try...
The error message you are receiving is indicating a problem with the OLE Automation mechanism. To make it short, this a Windows feature allowing to communicate from one process to another and to allow a "client" process to ask services from a "server" process (it's a program, not a remote machine). In this case Lightroom is the client and another program on your system is the server.
If we could know what is the server process invoked by Lightroom, the problem would be easy to solve. But determining this needs tools that you don't have on your system. OLE Automation is a complicated matter and such problems are not easy to solve remotely.
Anyway, the only OLE Automation server used by Lightroom I'm aware of is actually Photoshop itself. When used as an OLE server, Photoshop doesn't appear on the screen. Just, a part of its code is used transparently by the client (Lightroom). In the past, I have already discovered problems with the way Adobe implemented the OLE Automation server part in Photoshop and this was never fixed, as far as I know.
Before we try to fix this problem, I'd like to know which version of Photoshop is installed on your system (if it is, of course). Please mention whether you have 2 versions of Photoshop installed , e.g. PS CS6 and PS CC. Also, did you try to launch Lightroom while Photoshop is running ? If you have 2 versions of PS, please try with both. Finally, when launching Lightroom, do you have a camera or a card reader connected to the system. In that case, please disconnect them (or remove the SD card possibly inserted in the card reader) and retry.
Depending on your answers, I might be able to suggest a few tests if you are comfortable with the manipulation of the Windows Registry and with the Windows Command Prompt.
Warning : I'll be on the road from Tuesday to Monday next week. So I will not be online during this period. I'll be also pretty busy Sunday but I'll do my best.