Eagle51, thank you. This is much more digestible. I will give it a try. I have one PC out of 4 that cannot see one of the other 3 but all the others see all of the other 3 on the home network.
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Can someone consolidate the steps in one post? It is unclear which steps worked. Thanks

Prior to the update I had no issues:
4 computers connected via wireless to a New Netgear Router.
Prior to update, all computers were recognized on the network and the Homegroup.

1) 3 computers...

zbook, you will need to determine which partition that windows is installed on you can experiment by typing cd c: then type dir if windows isn't there then change to cd d: then type dir. Whichever...

Thanks to both of you. I will try both of these this evening. I found this in the SrtTrail.txt log file. Boot critical file C:\WINDOWS\System32\drivers\ACPI.sys is corrupt. Any ideas on this?

I have tried SFC, Chkdsk, bootrec and none of them work especially if they require a reboot. I am pretty convinced the issue is the rebuildbcd command error is at the root of the problem, I just...

Lately I am having an issue when doing a proper shutdown or reboot from a working desktop.
Every time I shut down or reboot, My laptop starts to boot, shuts down automatically and reboots to...