Quicktime encounters problem and must close. Sorry for inconvenience.

Question

I have downloaded Quicktime now 3 times and each time downloaded it again after first removing it from the control panel. Up to a few months ago I never had a problem and used it for many years as such. I think the problems started when the combination iTunes/Quicktime came on the market but I might be wrong. I have downloaded the combination, then Quicktime separately and iTunes separately but to no avail.
I am an amateur in the field of problem soving so ask for your help. I have the icon sitting on the desktop but when I click on it I get immediately the message:
"Quicktime encounters problem and must close. Sorry for inconvenience." What I don't think I had before is the fact that during installing I say the Icon appearing on my desktop and immediately my computer goes black and start
a reboot. So I suppose my problem can be anything.
I most likely messed something up.
Your assistance is greatly appreciated.

Answer 1

What I don't think I had before is the fact that during installing I say the Icon appearing on my desktop and immediately my computer goes black and start
a reboot.
That's a bit disconcerting. Are you getting a flash of a blue screen as well?
We can make "hidden" blue screens stick around a little longer by using the following technique:
1) Open your system control panel (Start->Control Panels->System).
2) Select the "Advanced" tab.
3) Click the "Startup and Recover" section's "Settings" button
4) Verify that under "System Failure" the "Automatically restart" checkbox is not checked.
Make those settings changes, and try another install.
If you do get a blue screen this time, what numerical and text codes are you getting with it? (ie 0x[zeros/letters/numbers] CAPSANDUNDERSCORES)
if the blue screen mentions a specific file, let us know what that is called too. (exact spelling, please.)
here's a reference on the sorts of things i'm asking about:
Troubleshooting Windows Stop Messages