Update- So I unlocked the Administrator account, but that didn't seem to work either. So then I went into the computer performance options and changed the Data Execution Prevention setting- (Right click "My Computer", select "Properties", "Advanced Settings", "Settings" under the Performance tab, and then clicked the "Data Execution Prevention" tab. I changed the setting to "Turn on DEP for all programs and services except those I select." And then SHAM-WOW! It worked. I have installed everything I needed so far.
SO my question is whether or not I did something bad
! Or maybe it is just coincidence that it all started working after I changed that setting..?
Anyways, if anyone knows much about this setting, please let me know. Thanks.