Flash Player

I am using Windows 7 Home Premium with a Packard Bell purchased November 2009
Installed memory 2.00 GB
64-bit Operating System
Last week Adobe Flash Player vanished , all attempts to download Flash Player again have failed.
Anyone any ideas as to what to do next ?
All reasonable suggestions appreciated , unfortunately no GURU to turn to for help.

What happens when, for example, you go here:
http://get.adobe.com/flashplayer/
Otherwise, if you cannot do it fom there, your IE security may be too high. Try this:

In IE, Open Tools->Internet Options. On the Security tab, select the Internet zone and move the slide control to Medium. This setting should allow IE to download Flash.

Next, go to the Advanced tab. Under Browsing, check the box to Enable Install On Demand (Other). This will allow the Flash installer to run.