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No picture of post or OS boot

Aceman.au

Aceman.au

Joined
Jun 19, 2008
Messages
1,555 (0.27/day)
Location
Shepparton, Victoria, Australia
System Specs
System Name Toaster!
Processor Intel Core i7 10700KF @ 3.8/5.1GHZ
Motherboard ASUS Prime Z490-P Motherboard
Cooling Noctua NH-D15 CPU cooler.
Memory G.Skill Trident Z RGB 64GB (4x16GB) 3600MHz CL16 DDR4
Video Card(s) ASUS ROG Strix GeForce RTX 3090 OC 24GB
Storage Samsung 970 PRO M.2 NVMe SSD 1TB
Display(s) Asus ROG PG43UQ 4K UHD 144Hz G-Sync HDR 43in + 2 x ASUS VG258Q FHD 144Hz Freesync 25in Monitor
Case Corsair Obsidian 900D
Audio Device(s) EPOS Sennheiser GSX 1000 V2 amplifier + EPOS Gaming GSP 601 Headset
Power Supply Corsair AX1000 Titanium Modular
Mouse Razer Deathadder
Keyboard Corsair K70.
Software ALL HAIL WINDOWS 10.
Benchmark Scores Old system: http://www.3dmark.com/fs/6805248
As the title says, my PC will display no picture until it has loaded into the OS. I can't see the bios/post and my PC has been crashing so I've had to guess when I had to press enter to skip the safe mode boot thing. Or just wait it out.
 
Aquinus

Aquinus

Resident Wat-man
Joined
Jan 28, 2012
Messages
13,147 (2.94/day)
Location
Concord, NH, USA
System Specs
System Name Apollo
Processor Intel Core i9 9880H
Motherboard Some proprietary Apple thing.
Memory 64GB DDR4-2667
Video Card(s) AMD Radeon Pro 5600M, 8GB HBM2
Storage 1TB Apple NVMe, 4TB External
Display(s) Laptop @ 3072x1920 + 2x LG 5k Ultrafine TB3 displays
Case MacBook Pro (16", 2019)
Audio Device(s) AirPods Pro, Sennheiser HD 380s w/ FIIO Alpen 2, or Logitech 2.1 Speakers
Power Supply 96w Power Adapter
Mouse Logitech MX Master 3
Keyboard Logitech G915, GL Clicky
Software MacOS 12.1
Aceman.au said:
As the title says, my PC will display no picture until it has loaded into the OS. I can't see the bios/post and my PC has been crashing so I've had to guess when I had to press enter to skip the safe mode boot thing. Or just wait it out.
Click to expand...

On both my Radeon HD 2600 XT and nVidia GeForce 8600 GTS, by default it only outputs initial video from one of the two DVI ports. Is it possible that changing which port you're using for your display might change this?

If I understand your post correctly you're saying you can't see the POST but it still boots into Windows and doesn't display anything until Windows boots (or begins to boot)?
 
Jack1n

Jack1n

Joined
Oct 8, 2012
Messages
1,445 (0.34/day)
Location
Israel
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Processor AMD Ryzen 7 5800X
Motherboard B550 Aorus PRO V2
Cooling Corsair H115i RGB Platinum
Memory Gskill Trident Z Neo 3600 2x16GB
Video Card(s) MSI RTX 3070 Trio X
Storage WD Blue SN550 1TB NVME/Supertalent Teranova 2x1TB
Display(s) Acer XV340CK
Case Corsair 4000D Airflow
Power Supply Corsair HX850i
Mouse Logitech G502 Lightspeed
Keyboard Logitech G513 Tactile
Software Windows 10 Pro
your mother board probably recognizes your other 7970 as the default display,and when windows boots it dosent matter any more,try plugging your monitor into your other 7970.
 
Aceman.au

Aceman.au

Joined
Jun 19, 2008
Messages
1,555 (0.27/day)
Location
Shepparton, Victoria, Australia
System Specs
System Name Toaster!
Processor Intel Core i7 10700KF @ 3.8/5.1GHZ
Motherboard ASUS Prime Z490-P Motherboard
Cooling Noctua NH-D15 CPU cooler.
Memory G.Skill Trident Z RGB 64GB (4x16GB) 3600MHz CL16 DDR4
Video Card(s) ASUS ROG Strix GeForce RTX 3090 OC 24GB
Storage Samsung 970 PRO M.2 NVMe SSD 1TB
Display(s) Asus ROG PG43UQ 4K UHD 144Hz G-Sync HDR 43in + 2 x ASUS VG258Q FHD 144Hz Freesync 25in Monitor
Case Corsair Obsidian 900D
Audio Device(s) EPOS Sennheiser GSX 1000 V2 amplifier + EPOS Gaming GSP 601 Headset
Power Supply Corsair AX1000 Titanium Modular
Mouse Razer Deathadder
Keyboard Corsair K70.
Software ALL HAIL WINDOWS 10.
Benchmark Scores Old system: http://www.3dmark.com/fs/6805248
Jack1n said:
your mother board probably recognizes your other 7970 as the default display,and when windows boots it dosent matter any more,try plugging your monitor into your other 7970.
Click to expand...

Oh ok. I did move the graphics card down to the middle 2 slots due the CPU cooler being too large and blocking the top PCI-E slot (do I lose performance because of this?). I'll try that out and see if it works. I've plugged my monitors the top card which I assumed would've been the default.
 
Aceman.au

Aceman.au

Joined
Jun 19, 2008
Messages
1,555 (0.27/day)
Location
Shepparton, Victoria, Australia
System Specs
System Name Toaster!
Processor Intel Core i7 10700KF @ 3.8/5.1GHZ
Motherboard ASUS Prime Z490-P Motherboard
Cooling Noctua NH-D15 CPU cooler.
Memory G.Skill Trident Z RGB 64GB (4x16GB) 3600MHz CL16 DDR4
Video Card(s) ASUS ROG Strix GeForce RTX 3090 OC 24GB
Storage Samsung 970 PRO M.2 NVMe SSD 1TB
Display(s) Asus ROG PG43UQ 4K UHD 144Hz G-Sync HDR 43in + 2 x ASUS VG258Q FHD 144Hz Freesync 25in Monitor
Case Corsair Obsidian 900D
Audio Device(s) EPOS Sennheiser GSX 1000 V2 amplifier + EPOS Gaming GSP 601 Headset
Power Supply Corsair AX1000 Titanium Modular
Mouse Razer Deathadder
Keyboard Corsair K70.
Software ALL HAIL WINDOWS 10.
Benchmark Scores Old system: http://www.3dmark.com/fs/6805248
Aquinus said:
On both my Radeon HD 2600 XT and nVidia GeForce 8600 GTS, by default it only outputs initial video from one of the two DVI ports. Is it possible that changing which port you're using for your display might change this?

If I understand your post correctly you're saying you can't see the POST but it still boots into Windows and doesn't display anything until Windows boots (or begins to boot)?
Click to expand...

Once windows 7 starts loading my desktop, the picture shows.
 
Aquinus

Aquinus

Resident Wat-man
Joined
Jan 28, 2012
Messages
13,147 (2.94/day)
Location
Concord, NH, USA
System Specs
System Name Apollo
Processor Intel Core i9 9880H
Motherboard Some proprietary Apple thing.
Memory 64GB DDR4-2667
Video Card(s) AMD Radeon Pro 5600M, 8GB HBM2
Storage 1TB Apple NVMe, 4TB External
Display(s) Laptop @ 3072x1920 + 2x LG 5k Ultrafine TB3 displays
Case MacBook Pro (16", 2019)
Audio Device(s) AirPods Pro, Sennheiser HD 380s w/ FIIO Alpen 2, or Logitech 2.1 Speakers
Power Supply 96w Power Adapter
Mouse Logitech MX Master 3
Keyboard Logitech G915, GL Clicky
Software MacOS 12.1
Jack1n said:
your mother board probably recognizes your other 7970 as the default display,and when windows boots it dosent matter any more,try plugging your monitor into your other 7970.
Click to expand...

+1: That too. It very well could be detecting the second video card as the primary one. I missed the 2x in your system specs. Whoops. :eek:

I plugged my displays into the top most card (first PCI-E slot on the motherboard.)
 
Jack1n

Jack1n

Joined
Oct 8, 2012
Messages
1,445 (0.34/day)
Location
Israel
System Specs
Processor AMD Ryzen 7 5800X
Motherboard B550 Aorus PRO V2
Cooling Corsair H115i RGB Platinum
Memory Gskill Trident Z Neo 3600 2x16GB
Video Card(s) MSI RTX 3070 Trio X
Storage WD Blue SN550 1TB NVME/Supertalent Teranova 2x1TB
Display(s) Acer XV340CK
Case Corsair 4000D Airflow
Power Supply Corsair HX850i
Mouse Logitech G502 Lightspeed
Keyboard Logitech G513 Tactile
Software Windows 10 Pro
Aceman.au said:
Oh ok. I did move the graphics card down to the middle 2 slots due the CPU cooler being too large and blocking the top PCI-E slot (do I lose performance because of this?). I'll try that out and see if it works. I've plugged my monitors the top card which I assumed would've been the default.
Click to expand...

Only the 1st and 3rd slots on your motherboard are capable of x16 bandwith,but even if it runs at 8x you will only lose about 2% performance.
 
Aceman.au

Aceman.au

Joined
Jun 19, 2008
Messages
1,555 (0.27/day)
Location
Shepparton, Victoria, Australia
System Specs
System Name Toaster!
Processor Intel Core i7 10700KF @ 3.8/5.1GHZ
Motherboard ASUS Prime Z490-P Motherboard
Cooling Noctua NH-D15 CPU cooler.
Memory G.Skill Trident Z RGB 64GB (4x16GB) 3600MHz CL16 DDR4
Video Card(s) ASUS ROG Strix GeForce RTX 3090 OC 24GB
Storage Samsung 970 PRO M.2 NVMe SSD 1TB
Display(s) Asus ROG PG43UQ 4K UHD 144Hz G-Sync HDR 43in + 2 x ASUS VG258Q FHD 144Hz Freesync 25in Monitor
Case Corsair Obsidian 900D
Audio Device(s) EPOS Sennheiser GSX 1000 V2 amplifier + EPOS Gaming GSP 601 Headset
Power Supply Corsair AX1000 Titanium Modular
Mouse Razer Deathadder
Keyboard Corsair K70.
Software ALL HAIL WINDOWS 10.
Benchmark Scores Old system: http://www.3dmark.com/fs/6805248
Problem fixed by switching to the bottom card which is my primary. Everything is normal! Hopefully this will fix my flash and crashing problems.

Thanks Jack1n
 
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