In a pinch, the Windows XP System Restore feature is a reliable way to recover
from a software crisis. In a sense, System Restore sends your computer back in
time to a day when it was working properly. If Windows seems like it is undergoing
a complete meltdown, try restoring it back to a healthy state, as follows:

1. Click the Start button in the lower-left corner of Windows.

2. Click All Programs.

3. Select Accessories.

4. Select System Tools.

5. Click System Restore.

6. The System Restore window opens. Click the Restore My Computer
to an Earlier Time button

7. Click the Next button, located near the lower-right corner of this
window.

8. A calendar appears. In it, click on a day when your computer was
working properly, then click the Next button .

9. To confirm your choice, click Next.

10. The System Restore process begins. Moments later, your computer
automatically restarts itself. When it boots up, follow the on-screen
instructions.

11. To make it easier to access System Restore the next time you need it,
you can “pin” it to your Start menu (but only if your Start menu is in
XP mode rather than classic mode), like this:

a. Follow Steps 1 through 4 in this procedure to access the System
Tools folder.
b. This time, right-click System Restore and select Pin to Start
Menu.
c. A shortcut to System Restore is placed on your Start menu.

From now on, whenever you need to restore your computer to
an earlier time, simply click the Start button and then click
System Restore.

1. Click the Start button in the lower-left corner of Windows.

2. Click the Run button.

3. A window opens.Type regedit in the blank, and then click the OK
button or press the Enter key.

4. Click the OK button or press the Enter key.

5. The Windows Registry Editor opens. In the left window pane, doubleclick
the registry key labeled HKEY_LOCAL_MACHINE. If you
can’t find it, do the following:

a. In the left window pane of the Registry Editor, scroll to the top.
b. If any of the HKEY registry keys are open—as indicated by a
minus sign (-) on their left side—then close them by clicking
that minus sign. When a registry key has been properly closed, it
will have a plus sign (+) next to it.
c. Repeat this process for the remaining HKEY registry keys until
the only things visible in the left window pane are the five
HKEY keys
Double-click the HKEY_LOCAL_MACHINE registry key.

6. A new column of registry keys appears. Double-click the Software registry
key.

7. Open the Classes registry key.

8. A long list of registry keys appears. Scroll down and double-click
CLSID.

9. Another long list of registry keys appears. Scroll down and double-click
the one labeled {87D62D94-71B3-4b9a-9489-5FE6850DC73E}.

10. Right-click the InProcServer32registry key, and then select Delete.

11. You are asked to confirm the deletion. Click the Yes button.

12. Exit the Registry Editor by clicking the X button in the upper-right
corner.

13. Shut down your computer and restart it.

14. When you return to Windows, you should now be able to delete the
.avi file.

Follow the following steps:

1. Open notepad.exe, type “del c:\windows\prefetch\ntosboot-*.* /q” (without the quotes) & save as “ntosboot.bat” in c:\

2. From the Start menu, select “Run…” & type “gpedit.msc”.

3. Double click “Windows Settings” under “Computer Configuration” and double click again on “Shutdown” in the right window.

4. In the new window, click “add”, “Browse”, locate your “ntosboot.bat” file & click “Open”.

5. Click “OK”, “Apply” & “OK” once again to exit.

6. From the Start menu, select “Run…” & type “devmgmt.msc”.

7. Double click on “IDE ATA/ATAPI controllers”

8. Right click on “Primary IDE Channel” and select “Properties”.

9. Select the “Advanced Settings” tab then on the device or 1 that doesn’t have ‘device type’ greyed out select ‘none’ instead of ‘autodetect’ & click “OK”.

10. Right click on “Secondary IDE channel”, select “Properties” and
repeat step 9.

11. Reboot your computer.