Now the issue is my system unexpectedly slows down considerably sometimes. I realized today that it happens when I start up from a Hibernate. Also, when the pc is in sleep mode, pressing any button does not immediately wake the system. I have to keep pressing keys several times for it to wake. However operation after wake from sleep is normal. Please do watch the 1 minute video of what I am experiencing after starting up from a Hibernate. This is my first time building a PC and I do not know which component is faulty.