Try selecting "Last Known Configuration"
Once that is done you run scan on the drive to see if any of the operating files are corrupt.
1. Click on Start
2. Type
command prompt or cmd in the search box
3. Right click
Command Prompt and then click on
Run as Administrator
4. At the command prompt (Blinking cursor) type the following command
sfc /scannow (space after c..../)
It will take awhile if there are corrupt files should fix them.
Once it is done reboot
AVG is a pretty good FREE virus program. I would download and reinstall over the top of itself.
https://www.avg.com/en-ww/ppc/protec...Fc14YgodaDwO4A
Download and install the FREE VERSION, when it installs if you have a choice select custom and only install the anti-virus program. Some downloads want to install other crap like browser extensions...
Once it is installed do a complete scan.
Now you can clean up the drive
Right click Start then to Control Panel
Go to Programs and Features or Uninstall a program.
Find the program you want to uninstall, click it and select it then click Uninstall
Reboot
Now run
Disk Cleanup:
Start>Computer
Right click the drive you want to clean and click on Properties
On the Properties dialog click Disk Cleanup
Click either My Files Only or Files from all Users on the Computer
On the Disk Cleanup TAB select the files to delete and then click OK
It’s okay to place check marks by
all items. Those things wouldn’t be listed if they were crucial to the computer’s operation.
There’s one exception to placing check marks by all the items, however: Hibernation File Cleaner. Do not remove that item if you use hibernation on your computer.
Reboot.
Now go in and stop programs from starting with Windows that you don't need. these programs start and run in the background and 90% you don't need. If the program is needed you run it from a desktop shortcut or the Programs Exe file.
Click Start > type in
msconfig in the search box
Press enter to open
Click on the Startup TAB
All items checked start with Windows and can really slow down loading. There can be hundreds of different entires here. 95% u\you don't need.
The most common ones you do not need to start Windows are:
Adobe
Apple
MS Office
Skype
ITunes
There are several sources out there that will tell you what is needed/unneeded, one of them is:
http://www.pacs-portal.co.uk/startup_search.php
One I have used over the years is VIPER
http://www.blackviper.com/service-configurations/