How do I pull up Windows error log?

Click Start > Control Panel > System and Security > Administrative Tools. Double-click Event Viewer. Select the type of logs that you wish to review (ex: Windows Logs)

How do I check recent activity on my computer?

Press the Windows key on your keyboard – the Windows symbol is found in the bottom-left corner of most keyboards, between the CTRL and ALT keys. This will bring up a window that shows all of the files that have been recently edited on your computer.