Bad pci-e slot or what?

[joerex910]

Doing some mantainance i took my GPU(gtx 1060) out of my mb and now when i putted it back in it wont display (this with hdmi cable), then tried with my hd 6670 nothing, tried vga with it nothing again.
Specs:
500w thermaltake smart 80+
FX 6300
M5a78 lx3
Kingston hyperfury 2x4gb
Kingston ssd
This pc with the hd 6670 has been working since 2013 or 14 and had the gtx 1060 for 20 days working with zero problema
Can it be that the pci-e got bad or something?
Pins look fine and when it boots all fans and pheripherals work but it just doesnt display anything
Help please

 

[rocktalkrock]

1. Could you be more specific when you say "doing some maintenance"?
2. Did the RAM sticks come loose?
3. Did dirt or lint get in the PCIe slot?
4. Have you cleared the CMOS?

 

[joerex910]

Well, it turne d out to be the two top screws, so now it has 3/5 and is working as good as before and with mantainance i refered to cleaning and also to control the new thermal paste