Computer Help: How to play Mp4 and other files that your computer won’t play

This will show you how to download a program that will allow you to play previously unplayable files Heres that link I promised: download.cnet.com

Why won’t my iPod sync with my computer? HELP?

I keep getting this error,
“iTunes was unable to load provider data from Sync Services.”
Help please.
Edit: Yes, i do have the most recent addition

HELP! Computer will boot but not load and keyboard and mouse won’t work?

My sister accidentally unplugged the power cord to her computer when she was removing a flash drive from the back. Now her computer will start up, but it will not go passed a black screen with a blinking underscore (this: _ ). Her mouse and keyboard also do not work. The lights to her keyboard [...]

I need help, limewire, torrents, all p2p won’t connect to networks on my vista computer. Any solutions?

I have tried a lot of things, from port forwarding, deleting Mcafee, installing and reinstalling limewire, frostwire, bearshare, ares and none will connect, they just say connecting to network and never do, bittorrents they never start downloading, from azureus, utorrent, bitcomet and others yet nothing. I have the latest java and microsoft updates, Limewire [...]

Computer Help needed. Emergency PC won’t power up after installing new memory

Computer Help needed. Please! The problem is my computer (Dell 4600) will not power up at all after installing new memory. How we go to this point: I tried upgrading my system by installing new memory. I was able to remove the old memory with no issues, but when I tried to install the new [...]