Slow CPU or Bad Motherboard or Bad HDD???

Hello there people... I have a problem and i don't know what to do apart from ask you guys. Basically i have a problem with my PC every time i boot my PC fresh. By fresh i mean the PC has been off for a while (overnight) when i boot the PC in the morning i get a really slow boot and also just playing a song or opening a file could make the clu go to at least 50 sometimes if i were to play a song it would play a really weired sound like a crashing then it will go away I thought it was the CPU at first but i just bought it and here is the main problem when i restart my PC it will go fast but right before i restarted the pc it went slow so every time i want to have full performance out of my pc i will have to reboot it just as it has turned on for the first time. So this is where i thought that it could not be the CPU here is a picture of why i also though it might be the HDD