hi Shawn, please make sure that you have the current version Firefox 49.0.2 installed: https://www.mozilla.org/en-US/firefox/all/

It supposedly & professionally was being installed properly. But after nothing supposedly is beomg opened after finishing, I then double-click the icon again while also including few seconds for processing it. But again nothing arrives. So please present additional thoughts if possible? Thank you,

   Shawn

thanks, so as this issue is sometimes also caused by malware on a system, next to the security software already in place, please also run a scan with various other security tools like the free version of malwarebytes, adwcleaner & eset online one-time scanner.

The adwcleaner was very tough for running within my PC few times. But if fully cleared up my substantial problems (after already including many diversified IOBit software (including ASC & Malware Fighter). Your immediate resolution had fully fixed my problems. Thank you very much!!!

Hello,

I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution more easily.

Thank you for contacting Mozilla Support.

Hello, I unfortunately would like to emphasize that Mozilla Firefox while again won’t be opened when initially attempting. Your past recommendations - adwcleaner_6.030 – could occasionally fix this problem ---> but that specified software is also 99.9% being frozen always attempting to run It (on my MS VISTA). I am slightly sure there are internal software that are causing this problem, but can you please emphasize another software that slightly could also be better for myself additionally?

I also am a Computer Programmer, and I also reassure that additional software internally would also possibly cause this problem. I with for also emphasizing that I have 3 MSCONFIG software(s) for also being checked upon STARTUP methods, but I slightly feel that I could additionally have specified SERVICES that would also cause this problem? And if so, can you please include any other recommendations for hopefully having my Mozilla Firefox work properly again?

Thank you again, Shawn Delmar

SWDelmar said

adwcleaner_6.030 – could occasionally fix this problem

Have you used any of the other scanners?

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

and if they don't operate normally or can't clear infections, try to scan while you launch windows in safemode with networking enabled by pressing F8 while the pc is booting.

Hello, When rebooting my PC I repetitively hit F8, but unfortunately not including any option whatsoever like the SafeMode. Would that happen because I’m pressing F8 many times or should I include F12 or something else instead? Thank you again, Shawn Delmar

Starting The Computer In Safe Mode;
Free Online Encyclopedia

Hello,

   The safe mode many past weeks had also & unfortunately not resolve my issue.  When fully having my PC personally examined, there is a specified piece on the Motherboard which unfortunately is defected, so I will probably purchase a new computer very shortly.  

Thank you extensively for your thoroughly given path. Best wishes!

Good luck.