Sorry for my bad English, I will try to explain the problem in great detail, I upgraded my pc few days ago, installed new windows and it was working fine, one day when I turned my pc on, I saw a blue screen error and then no display, I took it to a repair shop and he told me that I need to change the power supply, so I did but a few days later the same problem, I Google it and tried almost all things such cleaning ram etc but nothing works so far, strange thing is that sometimes the pc turns on and shows display but now I did all the things that but nothing helped so far, the fans are running, lights on but no display, please help me
OK, yes a new Power supply might have helped, but you really need to make certain that all of the new hardware, has all of their LATEST and GREATEST FIRMWARE imbedded. Also, you need to make certain that all of the new equipment MEETS REQUIREMENT's (or specification) of the Mother Board.
If you are not 100% certain how to check, go to your motherboards manufacturers website, and look for a system configurator for your motherboard. It will give a dashboard of all of the hooks your motherboard is capable of performing. You might even have to tweek some settings to make it stable. If you added more EQ, it could be more HEAT too, and not enough air flow! With a big 650W PS, you should be able to put a few more fans in there, see if that helps out!
OK, first of all, when you say upgrade, do you mean hardware, or operating system? If it is hardware, I am 99% sure that you placed equipment into the system that DOES NOT meet your motherboards requirements, and you are frying it! Now, was it hardware, or software?
It was hardware upgrade! Basically my new GTX 1060 and 8 gb, Ram but as mentioned earlier, this problem is quite strange, the repair shop guy told me to replace my PSU so i installed a new 650 PS unit but even after changing it i am facing the same problem