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5856
March 12th, 2019 03:00
T3600 Power supply upgrade problem
I just recently purchased a refurbished T3600 computer for a home office to run GIS software on. The graphics card that came with the computer was a generic 256 mb card and I need at 2GB card. I ended up getting a great deal on a much bigger card than I needed. I ended up installing a Radeon RX 480 8GB GDDR5 graphics card. The manufacturer recommends a 500w PS. My computer came with the 435w so I figured I would upgrade to the 635w PS. Once I installed the new PS, I got the green power cord light, and the computer fan running high speed but the computer itself would not boot up. I did not get a new power cord with the 635w PS so I am using the power cord I have from the 435w. Any ideas as to why the computer is not booting? I am running... Dell Precision T3600,128gb SSD & 2TB HDD,32GB RAM Intel Xeon E5-1607 3.0GHz, DVD R/W, Windows 10 Professional and the new 8GB graphics card.
speedstep
9 Legend
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47K Posts
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March 12th, 2019 04:00
The power supply isn't the only issue.
POST won't happen with NON DELL cards when secure boot is ON and Legacy Option Roms is OFF.
Further complicating this issue is that R series Cards Do not do MSDOS VESA Video Mode 103 like the previous Radeon HD series aka 2400, 3450, 4600, 5450, 6600, 7750, 8750
Confirmed this with Sapphire and AMD. GCN series GPUs don't support DOS VESA mode 103.
AMD R SERIES and newer can't run, or can't display the BIOS/POST screen.
This is separate from UEFI/Legacy issues.
This even applies to Crossfire rated workstations.
Dell BIOS requests DOS VESA 103 VIDEO VIA interrupt 10.
@DELL-Chris M may be able to shed some light on this but I talk about this from a machine language programmer point of view.
MSDOS INT 13 and MBR booting is also no longer supported.
Even ancient Dells from as early as 2006 however work fine with Quadro or Geforce cards from Nvidia with the same restrictions on secure boot.
The article talks about windows 8 but this also applies to windows 10 machines.
https://nvidia.custhelp.com/app/answers/detail/a_id/3156/~/when-installing-an-after-market-graphics-card-into-a-certified-windows-8-pc
The card used in the video below is a GTX 1080 TI in a 2006 XPS 400 machine.
https://www.youtube.com/watch?v=qa9b0TkTsLM
GISuser
3 Posts
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March 12th, 2019 08:00
I did this part this morning before reading your reply. When I reinstalled the 435w PS, everything booted up as normal and I was allowed to install and update the graphics card firmware. Everything seems to be working fine. I just didn’t want to over stress the system with a bare minimum PS which is why I was trying to upgrade PS to 635w. I will read the article you have attached and try out any of the changes suggested in the article. Thanks for your help.
bradthetechnut
7 Technologist
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9.2K Posts
1
March 12th, 2019 22:00
For additional info - GPU list: Precision T3600 Spec Sheet.pdf
T3600 Userbenchmark
Jamieson Olsen
16 Posts
1
March 13th, 2019 07:00
With the original GPU card installed can you still switch between 635W and 425W PSUs without any problems?
GISuser
3 Posts
0
March 13th, 2019 08:00
I haven't tried that with the original GPU. I will try that when I get home. Thanks