Sign in with
Sign up | Sign in
Your question

New Machine can't get video card working

Last response: in Graphics & Displays
Share
February 27, 2009 2:02:24 PM

Hello, I just built a new machine from newegg.com. I cannot get my Radeon 4850 x2 card to display any kind of picture inside my build. I know that the card isn't broken because I put it into a friends computer and it worked. While it is inside my computer the fans spin, and I get a green light on the back but no picture. On a side note I wanted to make sure there wasn't a problem with the slot so I plugged in a friends GTX 260 card. That card worked fine. Everything on my machine seems to be alright, because when I plugged in the GTX 260 I looked and the MOBO is detecting everything.

Any thoughts, build listed below.

SAPPHIRE 100260SR Radeon HD 4850 X2 1GB 512-bit (2 x 256-bit) GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire

Intel BOXDP45SG LGA 775 Intel P45 ATX Intel Motherboard - Retail

PC Power & Cooling S75CF 750W EPS12V SLI NVIDIA SLI Certified (Dual 8800 GTX and below) CrossFire Ready 80 PLUS

G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memory Model F3-10666CL9D-4GBNQ

Intel Core 2 Duo E8500 Wolfdale 3.16GHz LGA 775 65W Dual-Core Processor Model BX80570E8500

I'm totally baffled. Any and all help appreciated.
February 27, 2009 3:38:50 PM

wildtempest said:
Hello, I just built a new machine from newegg.com. I cannot get my Radeon 4850 x2 card to display any kind of picture inside my build. I know that the card isn't broken because I put it into a friends computer and it worked. While it is inside my computer the fans spin, and I get a green light on the back but no picture. On a side note I wanted to make sure there wasn't a problem with the slot so I plugged in a friends GTX 260 card. That card worked fine. Everything on my machine seems to be alright, because when I plugged in the GTX 260 I looked and the MOBO is detecting everything.

Any thoughts, build listed below.

SAPPHIRE 100260SR Radeon HD 4850 X2 1GB 512-bit (2 x 256-bit) GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire

Intel BOXDP45SG LGA 775 Intel P45 ATX Intel Motherboard - Retail

PC Power & Cooling S75CF 750W EPS12V SLI NVIDIA SLI Certified (Dual 8800 GTX and below) CrossFire Ready 80 PLUS

G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memory Model F3-10666CL9D-4GBNQ

Intel Core 2 Duo E8500 Wolfdale 3.16GHz LGA 775 65W Dual-Core Processor Model BX80570E8500

I'm totally baffled. Any and all help appreciated.


Well, you have ruled out the following causes:

- Video going to an internal IGP rather than a discrete card (P45 lacks an IGP)
- Insufficient PSU (PC P&C 750 W is plenty)
- Bad motherboard (the GTX 260 worked fine)
- Bad card (worked fine in another machine)
- Driver issues (GPU drivers don't load until after the OS boots and you have no POST image.)

About the only things I can think of that would cause those symptoms are that you forgot to connect the PCIe power plugs to the GPU and that your monitor doesn't send the correct EDID data to the GPU and is thus running out of range. If you have a second monitor sitting around, I'd try plugging that into your 4850 X2 into that and seeing if you get a picture.
February 27, 2009 5:32:35 PM

MU_Engineer said:
Well, you have ruled out the following causes:

- Video going to an internal IGP rather than a discrete card (P45 lacks an IGP)
- Insufficient PSU (PC P&C 750 W is plenty)
- Bad motherboard (the GTX 260 worked fine)
- Bad card (worked fine in another machine)
- Driver issues (GPU drivers don't load until after the OS boots and you have no POST image.)

About the only things I can think of that would cause those symptoms are that you forgot to connect the PCIe power plugs to the GPU and that your monitor doesn't send the correct EDID data to the GPU and is thus running out of range. If you have a second monitor sitting around, I'd try plugging that into your 4850 X2 into that and seeing if you get a picture.


I have tried it on a total of 4 different monitors to date, and it only ever showed up when I had it installed in my friends computer. I have also plugged in all combinations of the PCIE power into the card, (It has an 8 and a 6 slot). There is also power running to the 1x4 power slot right beside the Video card. This is what I assume u mean by GPU
!