I had free avast av on my win 10 PC. It stopped working, couldn’t get it going again so I uninstalled with the windows uninstaller and try to reinstall.
When I start the install it doesn’t get past the spinning orange load screen right at the beginning. I’ve left it for quite a while spinning but it isn’t getting any further.
Any ideas what I can do please?
do this and reboot https://www.avast.com/faq.php?article=AVKB10
i assume any preinstalled or previous used AV is removed >> https://www.avast.com/faq.php?article=AVKB11#artTitle
Thank you for the information.
Did this as detailed in safe mode, selecting free anti virus and default folders.
Rebooted and tried to install again but with the same problem, hangs on the orange circle loading screen.
I have been using avast for a few years, my PC was upgraded a few months back with windows 10 and I think avast was working until recently.
When I uninstalled originally I did it through windows and it looked like it removed it OK.
Anything else I can try please?
Anything else I can try please?See instructions here >> https://forum.avast.com/index.php?topic=53253.0 Scroll down to second picture > [b]Farbar Recovery Scan Tool [/b]< Run as instructed and attach the[b] two[/b] diagnostic logs
See below the box you write in … Attachments and other options
When done, Essexboy will have a look
Thank you, here are the logs.
Essexboy is notified, may take some hours before he is online
Just a quick observation, I see Lavasoft Utilities and they have been know to cause problems. 
Lavasoft web companion is now a pup as there is no uninstall or even entry in the install list and it replace some tcpip files
CAUTION : This fix is only valid for this specific machine, using it on another may break your computer
Download the attached fixlist.txt, to the same location as FRST.exe
https://dl.dropboxusercontent.com/u/73555776/FRSTfix.JPG
Run FRST and press Fix
On completion a log will be generated please post that
THEN
Please download AdwCleaner by Xplode onto your desktop.
[*]Close all open programs and internet browsers.
[*]Double click on AdwCleaner.exe to run the tool.
[*]Click on Scan.
[*]After the scan is complete click on “Clean”
[*]Confirm each time with Ok.
[*]Your computer will be rebooted automatically. A text file will open after the restart.
[*]Please post the content of that logfile with your next answer.
[*]You can find the logfile at C:\AdwCleaner[S0].txt as well.
FINALLY
Download Avast Uninstall Utility to your Desktop.
Download the correct version of Avast
Avast Free
Avast Pro
Avast Internet Security
Avast Premier
Disconnect from the net
Uninstall Avast via control panel
[]Run the uninstall tool and accept the reboot to safe mode
[]Once complete reboot your system
[*]Reinstall Avast
They keep making it harder and harder for the average computer user. >:(
Wouldn’t be a nasty pup if it wasn’t designed/engineered that way.
Thanks guys this fix worked.
You have been amazing, I’m really happy with the service and turn around.
For the future, it is very very important to use the AVAST removal tool in case you want to eliminate it, all others software leave traces in the PC. You can get removal tool from the avast site.
It was Lavasoft causing the problems
Subject to no further problems
I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems
Now the best part of the day ----- Your log now appears clean 
A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:
Remove tools
Download and run Delfix
Select the options as shown
https://dl.dropboxusercontent.com/u/73555776/delfix.JPG
: Keep Java Updated :
WARNING: Java is the #1 exploited program at this time. The Department of Homeland Security recommends that computer users disable Java
See this article
I would recommend that you completely uninstall Java unless you need it to run an important software.
In that instance I would recommend that you disable Java in your browsers until you need it for that software and then enable it. (See How to diasble Java in your web browser and How to unplug Java from the browser)
If you do need to keep Java then download JavaRa
Run the programme and select Remove Java Runtime. Uninstall all versions of Java present
Once done then run it again and select Update Java runtime > Download and install Latest version
https://dl.dropboxusercontent.com/u/73555776/javara.JPG
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:
CryptoPrevent install this programme to lock down and prevent crypto ransome ware
https://dl.dropboxusercontent.com/u/73555776/CryptoPrevent.JPG
Update and run weekly to keep your system clean
Click on the link above to be taken to Unchecky.com
click the very large Download button.
click Save
Click Open folder
Right click on the Unchecky_setup and choose to Run as Administrator
Once open click the Install button.
Then click on Finish
Unchecky is now installed and will help you keep unwanted check boxes unchecked, this is a fire and forget programme 
It is critical to have both a firewall and anti virus to protect your system and to keep them updated.
To learn more about how to protect yourself while on the internet read this little guide Best security practices Keep safe 
Already in the instructions given by essexboy, Reply #7 above.
practical tools essexboy , worth Sticky Topic
thanks!
Have a look at the top of the virusses and worms forum.
There is a sticky