Check the add-ons of Chrome or unknown applications at "Add/Remove Programs" applet in your system. Also look for Task manager for nondescript .exe(s) or services which running on the background.  

Sometimes,the bothersome applets was/were piggybacked from other software you installed and masqueraded as legitimate which cannot be detected with its signature/code.  

 

The last,it's better share some informations of what's the popup about:its vendors,links for anyone whom might has similar encounters and know how to solve it straightaway.  

 

kona, it sound like you might have 'toolbar hell', I would suggest using the iobit uninstaller and looking through the list for ANY items that have the following words 'tool' 'bar' 'toolbar' 'search protect' ,'ask'

then uninstall ALL the items that have those words (I also suggest the deep scan after the standard unistall and select all the found items and delete all of the found items.

then go through ALL the browser addons and remove ALL that are NOT vital for what YOU want to do

hope this helps you kona

harpo the NON-subscriber

Hopefully Hijack This will help, if not... try a herdProtect scan...more engines to look at your machine. 

Perhaps you can give us more info. What did you install or site did you visit before all this started?

system restore?

Either you do what Nimbin suggested and go for hijack this or you go the good old routine tour
YOu should also check if your tools are up to date:
Get these tools on a USB drive from a clean system

OTL= Link
Tutorial in german if you need help scream
http://www.trojaner-board.de/85104-otl-otlogfile-by-oldtimer.html 

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Malwarebytes Antimalware + Anti Rootkit = http://filepony.de/download-malwarebytes_anti_malware/
http://filepony.de/download-malwarebytes_anti_rootkit/

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AdwCleaner = http://filepony.de/download-adwcleaner/
Junkware removal tool http://filepony.de/download-junkware_removal_tool/

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Kaspersky (root)

TDSKILLER - http://filepony.de/download-tdsskiller/

(Even though MB Anti Rootkit and Kaspersky TDSKILLER will find certain kits, it is sometimes wiser to just start again.)


After getting those tools


1. If the system is not booting normaly anymore (BKA/GVU trojan) Any other problems it is highly suggested that you load windows in safemode
safemode with command prompt to be exact.

2.Make a restore point or better make a systemimage as backup!
Now you can launch OTL.exe as Admin and make a logfile for me or ~
~When done run Malwarebytes Antimalware you can run antiroot aswell, you can either go and delete the findings or gimme a pm with the log.txt report first.

However if you feel im not trustworthy/ or you do not have enough time to do so you can simply delete all of that nasty shit.
(since you have made a backup)

3.Now since you reported trouble with your browser:
Run AdwC+Junkware Removal these are your friends when it comes to that.
Even if you had run AdwC already run it in savemode... and make sure it is updated or at least the latest version of it

If the Problem persists = open the browser without the cable plugged
clean the cache temp cookies and so on.
Now Chrome: C:\Users\[USERNAME]\AppData\Local\Google\Chrome\User Data\Default\Cache
IE: C:\Users\USERNAME\AppData\Local\Microsoft\Windows\INetCache
Or C:\Users\<your user name>\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5.  (once you reach this folder you will find a number of folders ) like kjnwxiunis and so on, feel free to delete them all. 
Firefox: google said you can find the folder if you enter this in the URL =  about:cache?device=disk

IF a folder can not be deleted it is because your browser is still open or because there is a protected file sitting in one of them.
If so let me know the filename and i will tell you how to proceed.

I just list these extra because i will from now on use copy and paste...
Sometimes nasty stuff will not be deleted through the settings in your browser navigate to the folder above and delete it. (Shift+del)

Uninstall your browser and install the newest version.

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May i ask what protection you have for your system? Since it might be time to get something better.


 

Constant redirects and popups does sound like a browser add-on.  I would direct your attention there as previously suggested. 

I know lots of folks like to use browser add-ons and some can be very helpful others just get added in when you download a new piece of software or probably go to a site, most of use fail to check for them, myself included. 

Did you see post #10 ?

You said when in chrome you get constant redirects and popups.
Did you yet check the number of selected startuppages ? And search engines selected.

If not go to properties /then rider "settings"/
You have three options here under "At Start" you can choose if you want a new empty tab opened or the last page visited or you can define a page
Press define now you will see proxy underneath that option if you have a proxy addon installed it will show it automatically as selected you can also deactivate it right there 
underneath the proxy thingy you will have
display-characterizeation im not sure what it is called in english
make sure that the checkbox "show startpage" is selected if not check it.
select your startpage by clicking change
select one

On "Search" select a searchengine of your choice 
Scroll down until you read show advanced settings
there are bunch of checkboxes make sure the Phising and Malware protection is checked.


If all doesnt help you will also find a button at the very bottom that will reset the whole settings to default. But there is realy normally no need to do that.
Im still waiting for an answer about what protection software is installed.

Also i would like to know how many Addons are installed and what kind.
Since in the first post you said 

 
 

That is what i wrote in #10 
But with No details or any more information to the issue you can only suggest steps in hope to resolve and eliminate the issue.
While resolving the problem would be way easier if proper information would be provided.

I was waiting for a reply of Kona but without any reply there is either no help wanted or the problem has been solved.

Also problems like these would not be an issue if proper protection would be used, this may sound harsh but in most cases it is the truth.
I have repaired enough computers in my years where trials had been installed that had run out of testing time for years where no updates had been done, or no users with no protection software at all, since it seemed to slow down the computer, therefore it had been easier for certain individuals to uninstall and run the computer without it. With breaking results.
 

Just in case someone else hasn't mentioned these methods:

http://malwaretips.com/blogs/remove-browser-redirect-virus/

 

 

I was also going to recommend BleepingComputer if all else fails. They are the only site that was able to help me when I had a virus I could not remove. The best thing is all services are free. http://www.bleepingcomputer.com/

 

Amen.  Seriously....

 

Also kona if you are indeed 'repairing' someone else's system learning the system registry and how to effectively navigate/modify it would be invaluable.  Many software related issues (ie. software not behaving as it should etc. etc.) can either be completely fixed by editing/adding/modifying/removing a registry entry or at least you'll be pointed in the right direction for a fix.  Of course you should never go spelunking around in a system registry unless you know what you're doing and unless you are willing to accept responsibility for any/all potential results.

 

benmanns,

I'm sure you can appreciate that part of my post was a bit of a disclaimer and/or warning especially since it appears that the system in question (regarding kona's OP) is not actually 'his'.