Can't open or download pdf or exe files online with any browser on Windows 7

When I try to open for view or download pdf or exe files online, the browser keeps searching for a long time, and ultimately shows:

This site can't be reached. The connection was reset.

(followed by some suggestions that never worked). However, browsers open the pdf files (offline) from local storage very well. I have done everything regarding plugins and add-ons duly. Adobe Reader plugin is enabled in IE8. I have checked with firewall off. All other computers work fine on my local network connected to internet through a wifi router.

Screenshots of Process Explorer

SP Choudhary

Posted 2016-09-20T04:56:01.860

Reputation: 1

can you open this? https://live.sysinternals.com/Procexp.exe if so do a screen capture and try save and upload.

– Tony Stewart Sunnyskyguy EE75 – 2016-09-20T05:09:53.303

the exe file got downloaded – SP Choudhary – 2016-09-20T05:47:20.343

so where's the screen shot of all your processes? – Tony Stewart Sunnyskyguy EE75 – 2016-09-20T05:55:27.203

m looking for the way to upload screen shot. i m quite new to this site. Would u plz help me? – SP Choudhary – 2016-09-20T06:23:03.917

save in any paint program then click on edit then icon for image then click to add file and browse your PC for file then upload – Tony Stewart Sunnyskyguy EE75 – 2016-09-20T06:37:23.800

uploaded the screen shots @Tony Stewart – SP Choudhary – 2016-09-20T06:53:53.230

Answers

1) Not enough Memory available Usage 93.86% ( need 4GB min or run much leaner)
2) Too many Processes running 86 ( shoot for 50 by disabling useless startups in msconfig or uninstall) 30 is possible on a lean machine
3) CPU use 75% ( too high)
4) check for malware

You are only showing about half of your processes

Never heard of SurfCanister but Firefox was not pleased with their website

Your connection is not secure

The owner of surfcanister.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

http://www.bleepingcomputer.com/forums/t/87058/slow-computerbrowser-check-here-first;-it-may-not-be-malware/

IF YOU NEED HELP ASK A PRO ..or myself

Tony Stewart Sunnyskyguy EE75

Posted 2016-09-20T04:56:01.860

Reputation: 1 582

Earlier it used to work properly even with higher loads of processes. It is on a netbook with only ram capacity of 1 GB. problem started only after i formatted the partition and installed the windows fresh. i m checking now for malware. – SP Choudhary – 2016-09-20T07:59:16.437

1GB is small for the security software you have (bloated) get more RAM or dump the "bloatware" Uninstall Quick Heal Internet Security or Quick Heal AntiVirus Pro – Tony Stewart Sunnyskyguy EE75 – 2016-09-20T16:24:51.747

Your bloatware makes your PC run like it is infected. even if it is not, but it may be .. - Starter by CodeStuff - !! Autoruns - !! System Explorer Free or Portable - AnVir TaskManager Free or AnVir TaskManager Portable - !! WinPatrol - StartupLite - Startup Manager Portable - WhatInStartup Portable - !! Mike Lin's Startup Control Panel – Tony Stewart Sunnyskyguy EE75 – 2016-09-20T16:29:50.290