[Yes, same HP Envy Desktop] computer...
Assuming Win7 64-bit with Internet Explorer 11 (IE11) installed...
We'll need to "dig a little deeper" here. Please answer each of the following[admittedly tedious] diagnostic questions in a correspondingly-numbered list in your very next reply, preferably
without quoting my post:
- When (approx. date) did you purchase the HP computer?
1b. Did Win7 64-bit come preinstalled on the computer when you bought it, did you do a clean install of Win7,
or did you upgrade a (e.g., Vista; WinXP) computer to Win7?
1c. Has Windows 10 ever been installed?
1d. Have you ever done a Repair Install and/or a clean install of Windows 7 for any reason (e.g., new hardware)?
- What is the full name of your installed anti-virus application or security suite and
when (approx. date) does your current subscription expire? What anti-spyware applications (other than Defender) are installed? What third-party firewall (if any)?
- Has a(nother) Norton application or a McAfee application EVER been installed on the computer
since you bought it?
- Have you ever run the Norton Removal Tool and/or the McAfee Consumer Products Removal Tool since you purchased the computer?
- Is KB4012215 [or possibly KB4012218], KB3210131 and/or KB3184143 listed
in Installed Updates (not Update History)? [1]
- *Assuming Java is installed =>*Is Java Version 8 Update 121 (or higher) installed? TEST HERE USING INTERNET EXPLORER ONLY! =>
http://java.com/en/download/uninstallapplet.jsp [2]
- Java Update: Patch it or pitch it
http://krebsonsecurity.com/2014/07/java-update-patch-it-or-pitch-it/
- Is it time to disable/uninstall Java?
http://securitygarden.blogspot.com/2013/01/java-zero-day-again-time-to.html
- Is Adobe Flash Player v25.0.0.127 installed? TEST HERE USING INTERNET EXPLORER
ONLY! => http://www.adobe.com/software/flash/about/
8a. When (exact date) was Internet Explorer 11 installed according to
Installed Updates?
8b. What Update Version & KB number are displayed in the second line of text in IE11's Help | About [Alt+H+A] tab; e.g.,
Update Version: 11.0.99 (KB1231231) ?
8c. Is Firefox version 52.0.2 (or higher) and/or Google Chrome version 57.0.2987.133 (or higher) or any other alternate browser installed?
- Are you in the habit of using "Registry cleaners" (e.g., Registry Mechanic;
System Mechanic; RegCure; RegClean Pro; Advanced SystemCare; Total System Care; Glary Utilities; Registry Booster;
McAfee QuickClean; AVG Quick Clean; AVG PC TuneUp; Norton Registry Cleaner;
Norton PC Tuneup; PCTools Optimiser; SpeedUpMyPC; FixMyPC; PC Doctor; TuneUp Utilities; WinMaximizer; WinSweeper; Comodo System Cleaner; Advanced System Optimizer; CCleaner
Registry Cleaner component)?
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[1] Start | Control Panel | Programs and Features | View installed updates (in left-hand menu)
[2] No need to install Java if it's not already installed!