Try opening Firefox Safe mode. Please don't confuse it with Windows Safe Mode but open Start>Programs then find Mozilla Firefox then click Safe mode.
When Firefox safe mode dialog box appears, check all boxes to reset your Firefox settings to default. See if you can visit any site again using this mode of Firefox. See http://support.mozilla.com/en-US/kb/Safe+Mode for more info on Firefox Safe Mode.
Can you reset or reconfigure the settings of Avast Pro?
Have you tried running System File Checker in Windows XP? If not yet, please do this:
Open Command Prompt in Windows
Type SFC /scannow
Hit enter key on the keyboard
Let the system check for any issues. If you are prompted to insert your XP installation disc, do it.
See if that will do any help. Even if not, please try opening IE then visit Microsoft Update website for any updates. Install the critical updates if any is offered.
Ok, so here is my problem. I was on Myspace looking at a music artists' photos, when all of a sudden, my anti virus program (Avast Professional Edition, the one that you buy) pops up and tells me a whole bunch of viruses are invading my computer. After this occurrence, my internet has been really slow and unresponsive. Never again will I go on Myspace.
So over the past 5 days or so, I have been virus scanning my entire computer about 10 times, and my anti virus cannot find any more viruses. I have also done anti-spyware scans and I have eliminated a bunch of spyware, too. The problem hasn't gone away, though.
When I say my internet has been really messed up, I mean this: My anti virus' script blocker and all of the other blockers are on their highest settings along with Firefox's pop-up blocker, and I still get pop-ups, something I have almost never gotten before.
Besides this, when I try to visit websites, my Firefox error console gets riddled with error messages telling me it doesn't recognize or can't read a certain part of a website and it says "Declaration dropped." For example, on youtube, I looked on the error console and it said this: "Unknown Property 'zoom'. Declaration dropped."
Also, when I tried to install a registry clean up software, I got a message saying that the download wasn't a valid Win32 application or something of that sort. The download was from www.download.com, for the record. I eventually got one installed, but my internet hasn't shown any signs of improving.
By the way, when I typed in Firefox's website to try to re-install it, the website wouldn't load. It just wouldn't. Also, Google Chrome and Internet Explorer aren't any faster. In fact, most websites don't load for me at all. I can't check Email. On YouTube, the page itself will load, but when I click on a video, I get a black video window with a swirling load icon that would have stayed there for hours if I has just left it there.
What I also found quite intriguing was that whenever a pop-up appeared on my internet while using Firefox, it would say at the top of the window "Internet Explorer" despite me not being on Internet Explorer.
Also, I have tried to do a System Restore to multiple points within the past few months and every time my computer starts back up, I get a message telling me "Restoration Incomplete." The funny thing is that I am never told why.
My computer can still play video games and do almost everything else that doesn't include the internet just fine, but my internet is just so messed up.
I have the disc for the operating system I am running (Windows XP Professional), so I could re-install my operating system, but I really don't know a lot on this subject so I am waiting for advice on what to do.
One more thing: I have reset my router about 5 times and it has done nothing to help the problem.
Can someone please help me? My computer's internet has never acted this way.