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#21
How to fill in system specs. If you follow this your specs are available in each of your posts.
How to upload a snip, preferred way.
Obviously something happened just before you noticed the slow-down. If you are experiencing this online, it's an ISP issue. If programs on your PC are slow opening, such as Word, Notepad. etc, maybe your PC has the issue. In two hours you can't do a System Restore, Repair install and run Memory diagnostics.
The memory diagnostic should run at least several hours to eliminate it as a problem.
In my sig are links to Malwarebytes and SuperAntiSpyware, download both, update them, then run full scans with each. Disable any other security software during this step.
Use the CCleaner link to download it and run it to clean out old temp files, in options>advanced uncheck "Only delete temporary files older than 24 hours".