Method 1: I would suggest you to I
would suggest you to perform an SFC
scan and then check- Perform a SFC
Scan
Click Start, click All Programs, click Accessories,
right-click Command Prompt, and then
click Run as administrator. If you are
prompted for an administrator password
or for a confirmation, type the
password, or click Allow
Type the following command, and then press ENTER:
sfc /scannow
A message will appear stating that
'The system scan will begin'. Be
patient because the scan may take some
time
If any files require a replace SFC will replace them. You may be
asked to insert your Win7 DVD for this
process to continue
If everything is okay you should, after the scan, see the
following message "Windows resource
protection did not find any integrity
violations"
After the scan has completed, close the command prompt window,
restart the computer and check.
Check the below mentioned link for
further guidance on SFC scan
-http://support.microsoft.com/kb/929833
Method 2: if the issue persists, I
would suggest you to refer to the
below mentioned link to fix a
corrupted user profile and follow the
steps provided-
http://windows.microsoft.com/en-US/Windows7/Fix-a-corrupted-user-profile
For additional assistance you nay
refer to the link - Create a new user
account-
http://windows.microsoft.com/en-us/Windows7/Create-a-user-account
Check if the issue appears in the new
user account. You may also check after
logging in as an administrator.
Method 3: If the hotfix you have
installed is not very critical for
your computer then you may use the
below mentioned steps for system
restore -
The System Restore tool uses restore
points to return system files and
settings to an earlier point in time.
You can use it to restore the
operating system to a point in time in
which you did not experience the
issue.
Note: When you use System restore to
restore the computer to a previous
state, programs and updates that you
installed are removed. It is possible
that your hotfix files may get
removed.
To do this, there must be a System
Restore point at which the logon was
successful. Follow the steps mentioned
below to perform system restore – To
restore the operating system to an
earlier point in time, follow these
steps:
Click Start, type system restore in the Start Search box, and
then click System Restore in the
Programs list. If you are prompted for
an administrator password or
confirmation, type your password or
click Continue.
In the System Restore dialog box, click Choose a different restore
point, and then click next.
In the list of restore points, click a restore point that was created
before you began to experience the
issue, and then click next.
Click Finish. The computer restarts, and the system files and
settings are returned to the state
that they were in at the time that the
restore point was created.
http://social.answers.microsoft.com/Forums/en-SG/w7desktop/thread/d5fc0cc2-8082-4dc3-b39e-1f4924a6f1bd