A recently installed program has disabled the Welcome screen and Fast User Switching. To restore these features, you must uninstall the program. The following file name might help you identify the program that made the change: C:\WINDOWS\system32\BCMLogon.dll
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How to fix BCMLogon.dll error

resolved go to safemode and remove wireless driver and manually delete bcmlogon .dll file
thanks
indu/vineet
have a dell inspiron 5150 and not getting the fast user switching feature drove me nuts for months had it lost it but thanks to this site and all the insight about the bcmlogon.dll my problem is fixed and what worked was just going to CP and WCU (wireless configuration utility)and uncheck 1st box woo hoo thanks
Tried the two shorter fixes with no success. Going through the registry and removing GinaDLL did the trick. Got my original login page back. I was hoping it would help with another problem I’ve been having since around the same time, but it didn’t. Instead of automatically connecting to available networks (including my own),everytime I log on I have to open “View Available Wireless Networks”, go to Change Advanced Settings and reclick the “Use Windows to Configure…” box. It won’t stay clicked. Any suggestions?
Never mind. Fixed it myself using some of the above suggestions. I had Dell’s wireless utility and Window’s both trying to do the same task. Unchecked the configuration tool box in the Dell wireless WLAN Card Utility in CP. Thanks.
I just fixed this problem on my son’s computer. The condition occurred after we added a new network access point while on vacation. This network was listed before our regular home access (which may or may not be significant). When we got home I removed the new network access from Dell Wireless WLAN Card Utility because we didn’t need it any more. The logon/logoff screens were immediately restored to the prior state with the welcome screen and user switching. I think this worked because the access probably had the Authenticate prior to Windows Login tag checked on the properties for the network within the Dell Wireless utility. I don’t know for sure because I deleted the access before I examined the check box (unchecked) for our home network.
To view and adjust these settings
1. Right click on the system tray symbol for Dell Wireless WLAN Card Utility and select Open Utility, or open the utility from start menu.
2. On Wireless Networks tab select network and click edit.
3. On the options tab uncheck or view the Authenticate prior to Windows domain logon.
This problem can be a total pain, so I’m glad you guys have posted other solutions.
thanks for the help. but i have one more propblem on startup i get a message LoadLibrary(“C:\Documents and Settings\All Users\Application data\bcdsxsvw.dll”)failed – the specified module could not be found. How do i deal with this?
Shaw – I don’t know what the bcdsxsvw.dll is for. Could it be spyware or malware? You might try running Kaspersky Online Scanner to see. I don’t get any results for bcdsxsvw.dll in Google so I have no idea why you’re getting that error.
Thanks for your help. I have done the scan but nothing came up.
Hi once again i am having problems with my themes i can’t add a new theme would you know what the problem is