Nothing showing in the Speccy report that would 100% identify the cause of the issue, there are three things though that are worthy of being checked;
(1) There are unnecessary updates scheduled so disable them and by running msconfig;
Use msconfig to determine what is causing the problem
Click on Start then Run, type msconfig and press Enter.
Click on the Startup tab (for Windows 8, the Startup tab has a link to open Task Manager/Startup tab. Use that.), record what is currently starting then click the Disable Allbutton.
Reboot and see if it runs better.
If yes then use msconfig to enable several items at a time till you find the culprit.
If no, start msconfig and click on the Services tab.
Check the Hide All Microsoft Services box, record what is currently starting then click the Disable All button.
Again, do a regular boot, see if it runs normal.
If yes then use msconfig to enable services till you find the culprit.
Once you've found the culprit, uninstall it or find out how to eliminate it from your system. Simply disabling it in msconfig is a temporary fix at best.
Enable everything else you disabled.
(2) The pagefile/virtual memory is set too high as it should only be 1.5 Xs the amount of physical memory that is present, you have 8GB of Ram so the pagefile/virtual memory should only be 12GB;
Memory Usage: 61 %
Total Physical: 7.73 GB
Available Physical: 3.00 GB
Total Virtual: 15 GB
Available Virtual: 11 GB
Open System by clicking the Start button , right-clicking Computer, and then clicking Properties.
In the left pane, click Advanced system settings. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
On the Advanced tab, under Performance, click Settings.
Click the Advanced tab, and then, under Virtual memory, click Change.
Clear the Automatically manage paging file size for all drives check box.
Under Drive [Volume Label], click the drive that contains the paging file you want to change.
Click Custom size, type a new size in megabytes in the Initial size (MB) or Maximum size (MB) box, click Set, and then click OK.
(3) Ruggie advised me that the keyboard and mouse drivers had been identified as crashing so try a standard keyboard and mouse, this after uninstalling the drivers and any associated software for them.
NB: You will note that Speccy shows that the sharkoon keyboard drivers have been installed three time and that they are the same version dated 6-21-2006 with the driver provider/vendor being unknown.