Trouble installing

Sarah, Try removing AVG by downloading & using the 32 or 64bit 2015 Remover (http://www.avg.com/ww-en/utilities) [Scroll Down], whichever suits your system. If you're not sure about 32 or 64bit on your system have a look @ this link (http://forums.avg.com/ww-en/avg-free-forum?sec=thread&act=show&id=140471#post_140471).
AVG Guru

Hi - I've had some computer problems (DELL Latitude E6410 Laptop) and somehow AVG got turned off.  Now it won't turn on.  I triend uninstalling it so I could start with a fresh download, but it won't do it.  It looks like it's working but the uninstall just keeps looping (for hours, if I let it go).  I downloaded a fresh version anyway (worked fine), but it won't install.  I get this message:
Error Code:  0xC0070643
Error Mssg:  General internal error.
Additional Mssg:  MSI Enging:  Failed to install the product
Context:  AVG product installation, MSI action failed.
Could someone please help me with this?  I really love the product and am extremely vulnerable without it.
Thank you!

Sarah, Try removing AVG by downloading & using the 32 or 64bit 2015 Remover (http://www.avg.com/ww-en/utilities) [Scroll Down], whichever suits your system. If you're not sure about 32 or 64bit on your system have a look @ this link (http://forums.avg.com/ww-en/avg-free-forum?sec=thread&act=show&id=140471#post_140471).
AVG Guru