Having issue slow performance on computer maybe it cause by the computer has a bad sector on hard drive or system infected by viruses or malware. Before we going to check on hardware, first thing we do is to check the software. Slow performance may happen by to many services running on the background of the system, we can disable it on msconfig. Here is the steps we can do before take any action further more.
1. On search files and programs type "msconfig" then enter
2. Click Services tab then click Enable all
3. Check Hide all Microsoft services
4. Click Disable all
Note. We can Enable necessary service one by one
5. Click Apply then OK
6. Restart Computer
See also:
Abnormal Behavior Occurs After Calibrate Touch Screen
Check the unknown device with USB ID