Okay this is my first time posting here. I purchased a new pc it was around 2-3 months ago. I have a kllisre motherboard x79 16 gigs ram and E5 2640 which I got for around 120$. I have a old case and a psu which came with the case. It was working fine till this week. Since a week whenever I turn it on I can only see power LED and power comes to front usb panel all fans work but no display output and also there is no power to back usb panel. So after restarting 2-3 times it will turn on. But now I get WHEA UNEXPECTED ERROR blue screens while gaming or browsing web. I think it's a failing psu and also my harddisk is slow sometimes it takes 10 second to open a folder. I have a crucial mx500 ssd which is fine and a GTX 1050TI 4 gigs. Thank you.