Speccy says the temps are good and the hard drive is in very good shape so nothing obvious. It does show only 1 slot of 2 in use and only 4 GB of DDR3 RAM. 64 bit PC seem to prefer 8 so adding RAM might speed it up.
You can uninstall Speccy if you haven't already.
Process Explorer says System Idle looks good. It's over 90% so nothing is currently hogging the CPU. You do have 3 processes suspended - I suspect because they do not have signatures.
HxTsr.exe Suspended 7,360 K 23,236 K 5336 Microsoft Outlook Communications Microsoft Corporation (No signature was present in the subject) Microsoft Corporation
HxMail.exe Suspended 28,880 K 54,880 K 10364 Microsoft Outlook Mail Microsoft Corporation (No signature was present in the subject) Microsoft Corporation
SkypeHost.exe Suspended 16,404 K 5,624 K 1900 Microsoft Skype Microsoft Corporation (No signature was present in the subject) Microsoft Corporation
They are all supposed to be from Microsoft which should know better than to send out files without signatures. First two are part of Outlook. Last one is Skype.
The next three I want to mention are part of LG's Dual Smart Solution. (Also without signatures but not suspended. Don't know why they get special treatment):
Dual Smart Solution.exe 0.01 2,124 K 8,644 K 7200 Dual Smart Solution LG Electronics (No signature was present in the subject) LG Electronics
TestDDCCI.exe 0.35 2,648 K 8,516 K 18496 TestDDCCI MFC Application (No signature was present in the subject)
SmartHookTestApp.exe 1,980 K 7,672 K 18356 TODO: <File description> TODO: <Company name> (No signature was present in the subject) TODO: <Company name>
They have a reputation for sometimes hogging the CPU tho they don't appear to be doing so now. I believe there is a version 2.7 out (you have 2.5) so you might check LG's site for new software for your monitor. If you never use a second monitor you can probably uninstall it.
We can clear the events, reboot and look at the errors we get to see if something is broken. Sometimes this will reveal a service that doesn't start or some other error will which slow things down.
Copy the next line:
for /F "tokens=*" %1 in ('wevtutil.exe el') DO wevtutil.exe cl "%1"
Windows key + x and choose Command Line (Admin) (There are two so make sure you get the admin one)
Right click in the Command Window and Paste (or Edit then Paste) and the copied line should appear. Hit Enter.
When the prompt returns,
1. Please download the Event Viewer Tool by Vino Rosso
and save it to your Desktop:
2. Right-click VEW.exe and Run AS Administrator
3. Under 'Select log to query', select:
4. Under 'Select type to list', select:
Then use the 'Number of events' as follows:
1. Click the radio button for 'Number of events'
Type 20 in the 1 to 20 box
Then click the Run button.
Notepad will open with the output log.
Please post the Output log in your next reply then repeat but select Application. (Each time you run VEW it overwrites the log so copy the first one to a Reply or rename it before running it a second time.)