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Only the audio plays when you play a video file in a PowerPoint slide presentation.

Problem:


Only the audio plays when you play a video file in a PowerPoint slide presentation.

Solution:

The hardware acceleration setting of the display device is too high
To work around this issue, follow these steps:
Click Start, click Run, type desk.cpl, and then click OK.
Click the Settings tab, and then click Advanced.
Click the Troubleshoot tab, and then move the Hardware acceleration slider to None.
Click Apply, and then click OK two times.
If the issue is resolved after you move the Hardware acceleration slider to None, contact the manufacturer of the graphics adaptor driver to determine whether there is an upgrade that addresses this specific issue.
The required codec is missing or damaged
To work around this issue, perform one of the following actions:
If the issue occurs when you use a .wmv file, download or reinstall the current version of Windows Media Player. If you are using an earlier version of Windows Media Player, upgrade it to the cuurent version of Windows Media Player for your operating system.

To install the recent version of Windows Media Player, visit the following Microsoft Web site:
http://www.microsoft.com/windows/windowsmedia/download
If the issue occurs when you use another video file format, such as an .mpeg file or an .avi file, download or reinstall the appropriate third-party codec. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
926373 You receive a codec error message, or audio plays but video does not play when you play media files in Windows Media Player 11
Conflicting third-party video software is installed
To work around this issue, remove the conflicting third-party video software from the computer. This software may be shareware or other software utilities that the Original Equipment Manufacturer (OEM) installed on the computer.
Reduce video acceleration for Microsoft Windows Media Player 9.0
To work around this issue, follow these steps:
On the Tools menu, click Options.
Click the Performance tab.
Click Advanced.
Click to remove the Use overlays check box.
Click OK two times.
Reduce video acceleration for Microsoft Windows Media Player 10.0 or a later version
To work around this issue, follow these steps:
Click Plug-ins, and then click Options.
Click the Performance tab.
Click Advanced
Click to remove the Use overlays check box.
Click OK.
Click Yes when you receive the following prompt:
If you are currently playing or paused, this change might result in restarting the media from the beginning. Do you want to apply the new settings?

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Setup cannot find office.en-us\dwtrig20.exe during office installation

Problem: 

Setup cannot find office.en-us\dwtrig20.exe during office installation

Solution:

Method 1:

a) Uninstall skype form control panel.

b) After installing office, re-install skype.

Method 2:
a) Browse disk by right clicking on it with mouse.
b) Double click on setup.exe file from the same location.

Method 3:
Note: Take backup of your registry before modifying it. 
For registry backup: open "run" >> type "regedit" >> goto "file" >> click on "export" on desktop.

a) Edit the registry.
HKEY_LOCAL_MACHINE > SOFTWARE > MICROSOFT > OFFICE Delete the keys (items) you find in the OFFICE folder but not the sub-folders. This removes traces of previous installs to avoid possible conflicts when installing the new version of Office.

b)HKEY_LOCAL_MACHINE > SOFTWARE > MICROSOFT > OFFICE > DELIVERY > SOURCEENGINE > DOWNLOADS
Delete the keys (items) you find here.

How to add Startup items to Windows 8.

Problem

You want to be able to add startup items that run when Windows starts. In previous versions of Windows, you could easily add them to the “Startup” folder in the Start menu which is no longer visible.

Solution

Open the Windows 8 start screen by doing one of the following:
Press the Windows key
Move mouse to the bottom left of the screen. When the start screen icon appears, click once.

OR (as commented by Rick) Press the ‘Windows key’+'R’
Type %appdata% and press Enter. This should take you to “C:\Users\<User-Name>\AppData\Roaming”.
Navigate to “\Microsoft\Windows\Start Menu\Programs\Startup”. The full path should now look something like:
“C:\Users\<user-name>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup”.
Add shortcuts to the programs you want to automatically start into this folder.

You can now add any shortcuts you want to start when you start your computer.

Excel 2013 right click doesn't work in spreadsheet.

Problem:

Excel 2013 right click doesn't work in spreadsheet.

Solution:

Check if excel works in safe mode.
1. Hold Windows key + R.
2. Copy and paste, or type the following command in the Open box, and then press Enter:
Excel /safe

Note: There is space between Excel and / If Excel safe works, disable the add-ins following steps mentioned below and determine the problem causing add-in: 
Try deleting following key from registry.
Excel 2007. Go to regedit and delete Options entry from HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\ and verify the result.
Note:
• Hold Windows key + R.
• Copy and paste, or type the following command in the Open box, and then press Enter:
regedit
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\Options
right click on Options and delete it.
Note: Ensure to back up the registry before any modification or deletion.
a) Locate and click the key or subkey that you want to back up.
b) Click the File menu, and then click Export.
c) In the Save in box, select the locati…