Images not showing in ANY browser

Found this thread : Images not displaying properly in any browser (The image in the first post I get occasionally, particularly long images).
I also sometimes get images similar to that displayed in post #12 in that same thread.
Most of the time when the images don't display, I just see the place holder. Although sometimes I don't even get the placeholder (Although rarely)
This happens on numerous sites.
If I right click on the place holder and select "View Image" sometimes it shows the image, other times it shows no image but says "<filename here> can't display because it has errors (Or words to that effect).
But I can got on another computer in the house, on the same network, (running Windows 8.1) and using Firefox and it displays the image fine. Both computers are wireless.
And followed all the tips listed in the above URL
I've run my AV (ZoneAlarm), Anti Malware (Anti malwarebytes), Spybot, CCCleaner, Refreshed Firefox, cleared cache, deleted temp files, did SFC /scannow (Which did not report any problems), I don't have ASC either.
I had Adblock Plus (?), and thought that may be causing problems, but disabled it to no avail.
But since the refresh, its no longer installed and the problem still remains.

This happens on Firefox, Chrome, and IE.

Thanks

Edit:
Windows 7 SP1 Home Premium
Gateway NV55C
3 GB DDR3
Intel HD Graphics
All drivers up to date

Edit2:
I get these occasionally too:
Pictures aren't loading in any browser
Images won't be shown properly on google chrome

IE file version says : 11.0.9600.17840
Although I haven't used IE for AGES.
I used Chrome for a few years up until about a month ago (got tired of using that memory pig).
Been using Firefox since then.

Edit:
After I did the refresh procedure for Firefox, it did seem a little better, but the image problems did not go away completely.

A little background on me (Which may or may not be relevant, but may help you).
I'm a musician and play guitar and keyboards.
I'm also an electronic tech and design guitar effects pedals.
Much of my time online is spent on guitar and electronics forums.
ULTIMATE GUITAR TABS. 800,000 songs catalog with free Chords, Guitar Tabs, Bass Tabs, Ukulele Chords and Guitar Pro Tabs!
Les Paul Forum | Gibson Epiphone - MyLesPaul.com
DIYstompboxes.com
freestompboxes.org ? Index page
http://www.thegearpage.net
madbeanpedals.Home
And a few others, but mainly electronic tech reference sites.

When I'm not on these pages, and on the computer, I design circuit boards for guitar pedals.
One of those design apps is a Java app. So I try to keep Java up to date.
I also use EagleCAD.

On my "Off time", the only pages I usually go to to goof off are cracked.com and 9gag.com.
Sometimes icanhazcheesburger.
On 9gag, the images problem really stands out.
Most of the animated gifs don't play or only play partially.
And sometimes some of the images don't even show up at all.

I never go to porn sites (honest).
I'm 55 and to be perfectly honest, I find looking at porn kinda boring.

OH damn, I forgot to mention...
When I start up IE, it locks up (I went to Internet Options via control panel).

Edit:
Well it did. I just started IE up and it didn't lock up this time.

And yeah, I see that image, both in Firefox and IE.
Although I don't see the fishbowl in Firefox, just the filename.
And I don't see the image below the other gradient image (black817-480x360, etc.) just the file name.




And on my current Extensions page/list






And before I forget, I want to thank you in advance for helping me.
I did it for a living but I also did it "on the side" for free.
I used to help people with their computers, mainly with some network problems via IRC.
It can be a real challenge.


Heres Facebook