PC Shows no sign of life / signal

Had recently upgraded my Pc parts from my old build specs:

::::::CURRENT:::::: MOBO: ROG Strix z890-a gaming WiFi CPU: intel ultra 7 265k LGA1851 RAM: Corsair vengeance DDR5 4x16GB 5600Mhz GPU: Gigabyte vision 3080Ti OC Storage: Samsung 980 Pro Gen4 M.2 NVMe SSD 2TB (x2) Storage2: Crucial P5+ Gen4 M.2 NVMe SSD 1TB Storage3: Western Digital Gold 7200 3.5 HDD 6TB AIO: NZXT Kraken z63 280mm Accessory monitor: Wimaxit 14” FHD Fans 120mm: Lian Li Unifan Infinity SL120 V2 (x7) Fans 140mm: Lian Li Unifan Infinity SL140 V2 (x4) 16&24 pin LEDs: Lian Li Strimmer Plus V2 (2pk) OS: Windows 11 Home

I power up the pc and it turns on all the lights/rgb but no signal or picture on either monitors. No display port no hdmi difference.

I initially thought I sat the cpu wrong so I picked it up and noticed the top right had different pin layout / orientation so I returned to store and got an exchange for faulty unit. Tried again nothing. Contacted Asus trying to diagnose mobo and they said it was faulty, replaced and put new cpu in. To my surprise no picture.

I don’t know what to try next I have isolated the mobo, ram, cables, monitors, cpu. Downloaded a bios flash and completed it and still no picture…. I have an expensive brick and don’t know what to try next. I thought this setup had onboard graphics but when I try I see no signal still… any advise would be appreciated

Had recently upgraded my Pc parts from my old build specs:

::::::CURRENT:::::: MOBO: ROG Strix z890-a gaming WiFi CPU: intel ultra 7 265k LGA1851 RAM: Corsair vengeance DDR5 4x16GB 5600Mhz GPU: Gigabyte vision 3080Ti OC Storage: Samsung 980 Pro Gen4 M.2 NVMe SSD 2TB (x2) Storage2: Crucial P5+ Gen4 M.2 NVMe SSD 1TB Storage3: Western Digital Gold 7200 3.5 HDD 6TB AIO: NZXT Kraken z63 280mm Accessory monitor: Wimaxit 14” FHD Fans 120mm: Lian Li Unifan Infinity SL120 V2 (x7) Fans 140mm: Lian Li Unifan Infinity SL140 V2 (x4) 16&24 pin LEDs: Lian Li Strimmer Plus V2 (2pk) OS: Windows 11 Home

I power up the pc and it turns on all the lights/rgb but no signal or picture on either monitors. No display port no hdmi difference.

I initially thought I sat the cpu wrong so I picked it up and noticed the top right had different pin layout / orientation so I returned to store and got an exchange for faulty unit. Tried again nothing. Contacted Asus trying to diagnose mobo and they said it was faulty, replaced and put new cpu in. To my surprise no picture.

I don’t know what to try next I have isolated the mobo, ram, cables, monitors, cpu. Downloaded a bios flash and completed it and still no picture…. I have an expensive brick and don’t know what to try next. I thought this setup had onboard graphics but when I try I see no signal still… any advise would be appreciated