Multiple program, registry, and settings issues.

I'm attempting to fix this Windows 8.1 system with the following complaint:

"On the start menu page that lists all of the programs. The applications
that aren't working & are showing an error message are the following (all
came with the computer): Alarms, Calculator, Calendar, Finance, Food &
Drink, Games, Health and Fitness, Help & Tips, Mail (can access our email
thru the desktop...this has never worked right since we have 2 emails),
Maps, Music, News, People, Reader, Reading List, Scan, Skype, Sound
Recorder, Sports, Travel, Video, Weather. Can't access PC settings....it
comes up a blank screen. Can get into settings if I use the search function
from the left side menu that pulls out and search for what I need. Also, as
I told you, can't access my SkyDrive (cloud). Any program that I have added
or downloaded seems to be working ok. Word is working fine."

Here are some entries from the event log:
Error: (05/30/2014 08:21:29 PM) (Source: Microsoft-Windows-User Profiles
Service) (EventID: 1542) (User: NT AUTHORITY)
Description: Windows cannot load classes registry file.
DETAIL - The configuration registry database is corrupt.
Error: (05/30/2014 08:21:29 PM) (Source: Microsoft-Windows-User Profiles
Service) (EventID: 1508) (User: NT AUTHORITY)
Description: Windows was unable to load the registry. This problem is often
caused by insufficient memory or insufficient security rights.

DETAIL - The configuration registry database is corrupt.
for C:\Users\{user name}\AppData\Local\Microsoft\Windows\\UsrClass.da t

Error: (05/30/2014 08:21:29 PM) (Source: Microsoft-Windows-User Profiles
Service) (EventID: 1542) (User: NT AUTHORITY)
Description: Windows cannot load classes registry file.
DETAIL - The configuration registry database is corrupt.

Error: (05/30/2014 08:21:29 PM) (Source: Microsoft-Windows-User Profiles
Service) (EventID: 1508) (User: NT AUTHORITY)
Description: Windows was unable to load the registry. This problem is often
caused by insufficient memory or insufficient security rights.

DETAIL - The configuration registry database is corrupt.
for C:\Users\{user name}\AppData\Local\Microsoft\Windows\\UsrClass.da t

Error: (05/30/2014 08:19:49 PM) (Source: Microsoft-Windows-LoadPerf)
(EventID: 3001) (User: NT AUTHORITY)
Description: The performance counter name string value in the registry is
not formatted correctly. The malformed string is WMI Objects. The first
DWORD in the Data section contains the index value to the malformed string
while the second and third DWORDs in the Data section contain the last valid
index values.

Error: (05/30/2014 08:19:29 PM) (Source: Application Error) (EventID: 1000)
(User: )
Description: Faulting application name: IEXPLORE.EXE, version:
11.0.9600.16518, time stamp: 0x52f347b2
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x000005b4
Faulting process id: 0x1958
Faulting application start time: 0xIEXPLORE.EXE0
Faulting application path: IEXPLORE.EXE1
Faulting module path: IEXPLORE.EXE2
Report Id: IEXPLORE.EXE3
Faulting package full name: IEXPLORE.EXE4
Faulting package-relative application ID: IEXPLORE.EXE5

Error: (05/30/2014 08:13:55 PM) (Source: Microsoft-Windows-Immersive-Shell)
(EventID: 5973) (User: RJPC)
Description: Activation of app
DefaultBrowser_NOPUBLISHERID!Microsoft.InternetExp lorer.Default failed with
error: -2144927148 See the Microsoft-Windows-TWinUI/Operational log for
additional information.

Error: (05/30/2014 08:13:55 PM) (Source: Microsoft-Windows-Immersive-Shell)
(EventID: 5973) (User: RJPC)
Description: Activation of app
DefaultBrowser_NOPUBLISHERID!Microsoft.InternetExp lorer.Default failed with
error: -2144927148 See the Microsoft-Windows-TWinUI/Operational log for
additional information.

Error: (05/30/2014 08:13:37 PM) (Source: Microsoft-Windows-User Profiles
Service) (EventID: 1542) (User: NT AUTHORITY)
Description: Windows cannot load classes registry file.
DETAIL - The configuration registry database is corrupt.

Error: (05/30/2014 08:13:37 PM) (Source: Microsoft-Windows-User Profiles
Service) (EventID: 1508) (User: NT AUTHORITY)
Description: Windows was unable to load the registry. This problem is often
caused by insufficient memory or insufficient security rights.

DETAIL - The configuration registry database is corrupt.
for C:\Users\{user name}\AppData\Local\Microsoft\Windows\\UsrClass.da t

I tried to create a new user profile and was going to copy the old profile
to the new one but when I clicked on the add a new user link in pc settings,
it would not open.

Thanks for your reply.
--
David Farber
Los Osos, CA