WalkyTalky

But I don't think I need to change parts because all my new parts were working at repair shop altogether.

Hey there, I'm curious if some modern motherboards do not work with some modern power supplies? I just built a system which parts are like this: i7 7700k Msi Z170A Krait Gaming G-Skill Trident Z RGB 16GB and Thermaltake 700W +80 Power supply So here is the problem. My new parts do not work with Thermaltake PSU but work just fine with my old PSU which is 500W and not even +80. Thermaltake PSU is not faulty, I'm sure about it because right now it powers my old system. When I plug Thermaltake PSU with my new hardware, CPU debug led is blinking on the motherboard without starting or booting and that's all I got. Another big puzzle is I took all my new parts to a local Computer repair shop and Thermaltake was working with my new parts because we updated bios there. Any suggestions or advice?