No DP signal from GPU

[ChaoticChaosx]

Okay so let me start by saying this is my second time flushing and refilling my custom loop. Same GPU block and CPU block as previous build. Only thing here is new coolant and bending new tubing. I will post before and after photos just in case. 
 

I can not get my GPU to pick up my monitor all of the sudden (or don’t seems that’s it’s the cullprit) the rgb on my block doesn’t come on and when that happens I’ll get no signal from dp to my monitor but I can hear the windows sound. I’d have to hard restart (holding down the power button) to around 3-4 different times and starting for it to finally turn on (I can tell by its RGB on) that I’ll get signal to finally see desktop. More times than not “no dp signal detected, going into standby mode”. I tried different DP ports on the GPU and different display port cables nothing worked this far. I also checked my riser cable and vertical mount connection and it’s in correctly and all very well connected as this isn’t my first time building a watercooled system. I have no idea of what to do now. Very frustrating and frustrated now. Working perfectly installing windows and everything else all last night. So if someone knows what is going on with it suddenly. This would be the place as people here know there stuff and have helped me in the past. 
 

My specs are in sig but here are the main basics. 
7800X3D w/XC7 

Asus TUF 4080 w/ ek vector2 

2x16gb 32gb ram 6000mhz

1000w gold EVGA G3 PSU

EK Cyrofuel Mystic Fog coolant

 

Photos: Before & After. If you wanna see GPU after last night. I can as well. A close up. 

 

[Tetras]

Is the riser new, or old?

[ChaoticChaosx]

24 minutes ago, Tetras said:

Is the riser new, or old?

I just install the vertical mount in April 23’. Just rebuilt now and now I have this “no signal issue. 

[Robchil]

1 hour ago, ChaoticChaosx said:

I just install the vertical mount in April 23’. Just rebuilt now and now I have this “no signal issue. 

bad news, you have to drain that loop... 

good news, it might only be the riser that's dead.. they don't take much handling, pick it apart and inspect both side of the connectors.. check that all pins are connecting where they should. with a voltmeter. PCIE socket and insert slot.  as far as i remember.. not that it's much but some cards gets their LED power from the socket.  to confirm try to insert the GPU into the mainboard and boot to bios, after you disconnected the pump power plug. 

i would probably just get a new PCIE 4.0 riser anyway. 

[ChaoticChaosx]

13 hours ago, Robchil said:

bad news, you have to drain that loop... 

good news, it might only be the riser that's dead.. they don't take much handling, pick it apart and inspect both side of the connectors.. check that all pins are connecting where they should. with a voltmeter. PCIE socket and insert slot.  as far as i remember.. not that it's much but some cards gets their LED power from the socket.  to confirm try to insert the GPU into the mainboard and boot to bios, after you disconnected the pump power plug. 

i would probably just get a new PCIE 4.0 riser anyway. 

You know what. You are probably right. As of yesterday. My motherboard is not rgb it’s solid light blue and when I turned my pc on to get the chipset installed the block was the same static light blue. 
 

Can I boot to bios with no coolant in the system? Is that what you mean?

I will check with volt meter and again once I drain my system. 

Yeah just ordered a new riser should be here today. So it says. Lian Li might as well stick with bracket and brand I have for the evo chassis.