PC stopped working after being opend. Please help!

I wanted to see if my motherboard has an extra PCI express so i opened the case checked everything and closed it. Since then PC is completly inresponsible. It seems normal, fans are spining etc but it does completly nothing, cant even get into bios. All the connections are ok, monitor works. Only thing that has been touched is CPU fan, because i have dusted it off. Any ideas what is going on?

Submitted February 01, 2018 at 01:06AM by xsw2_2wsx http://ift.tt/2DPdC9T