Iason_ :
When I installed my new GPU (MSI gaming R7370 2GB), the pc doesnt seem to boot up (no beep) and the monitor screen has no signal (by HDMI). The fans run normally.
550W PSU
Foxconn H61MXV V2.0
Intel i7 2600
16GB RAM
I ran into a similar problem some time ago, I started switching pretty much every part except cpu and motherboard (and ram, because I don't have spare ones). I solved it when I resitted my RAM, I just removed the stick, turned it on, heard the normal 4 beeps that there is no RAM, reinstalled the RAM, turned it on and it solved itself somehow. Worth a shot if you didn't solve it yet
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