Did it take a long time to load...before you installed Avast?
How long has the problem been present?
1. Please download MiniToolBox , save it to your desktop and run it.
Checkmark the following checkboxes: List last 10 Event Viewer log List Installed Programs List Users, Partitions and Memory size.
Click Go and paste the content into your next post.
2. Please download and install Speccy
to provide us with information about your computer. Clicking on this link will automatically initiate the download.
When Speccy opens you will see a screen similar to the one below.
Click on File which is outlined in red in the screen above, and then click on Publish Snapshot.
The following screen will appear, click on Yes.
The following screen will appear, click on Copy to Clipboard.
In your next post right click inside the Reply to Topic box, then click on Paste. This will load a link to the Speccy log.