After upgrade, Video Card Not Detected

CG5040 · Dec 26, 2014

My son's motherboard is a Socket 1156 - Intel H55 - GA-H55M-S2V (rev. 1.4). He had an Intel i3 processor and an HIS H775F1GD Radeon HD 7750 1GB (128bit) GDDR5 Displayport HDMI DVI (HDCP) PCI Express X16 3.0 Graphics Card, and 2x2 GB RAM. We upgraded his computer to an Intel Core i7 875k processor and 2x4GB G.Skill ripjaw RAM, both of which are compatible with his motherboard. The problem is, now the video card is not detected. With i3 and i5 LGA 1156 processors his motherboard has integrated graphics, but not with i7...so what do we have to do to fix this problem? Any help would be GREATLY appreciated....Sincerely, a mom trying to upgrade her son's computer!!

tachybana · Dec 26, 2014

what do you see when you access the device manager? (display adapters?)

CG5040 · Dec 26, 2014

My son had to run out to work for a few hours, so I may have to wait till he gets home for some questions, but I just checked under the device manager and all that comes up is the router, my passport (external drive), Richie's PC (his computer name), SteelSeries keyboard, USB composite device, and USB WLAN.

My son just texted me when I asked him your question and he said, "Just the monitor."

GhislainG · Dec 26, 2014

Is the monitor connected to the 7750 GPU? Was it previously connected to the 7750 or to the motherboard? Does everything work if you reinstall the old CPU?

Tradesman1 · Dec 26, 2014

Prob need to go into BIOS and change the primary video to PCI, PCI-E or PEG

GhislainG · Dec 26, 2014

Tradesman1 :

That's difficult to do when there's no display. The original CPU would have to be reinstalled and we don't yet know if the monitor is connected to the GPU.

CG5040 · Dec 27, 2014

My son got called out unexpectedly, so I will answer both your questions as soon as he gets home....thank you so very much for responding so quickly!

CG5040 · Dec 27, 2014

The monitor is plugged into the graphic card HDMI slot. The only display option is the monitor, so I do have display. When I look at my specs, it doesn't detect my graphics card. So I have display, but it's running off my monitor's graphics, not the video card. And yes, it does work with the old CPU.

CG5040 · Dec 27, 2014

We went into BIOS...it was set at PCI-E. We tried both PEG and PEG2 and it remains the same. This is what his speccy summary shows: Summary

Operating System
Windows 7 Home Premium 64-bit SP1
CPU
Intel Core i7 875K @ 2.93GHz 41 °C
Lynnfield 45nm Technology
RAM
8.00GB Dual-Channel DDR3 @ 799MHz (10-11-11-28)
Motherboard
Gigabyte Technology Co., Ltd. H55M-S2V (Socket 1156) 26 °C
Graphics
Standard Monitor (1920x1080@1Hz)
Storage
931GB Hitachi HDS721010CLA332 ATA Device (SATA) 24 °C
931GB Western Digital WD My Passport 0820 USB Device (USB (SATA)) 24 °C
Optical Drives
ATAPI iHAS124 B ATA Device
Audio
Realtek High Definition Audio

GhislainG · Dec 27, 2014

CG5040 :

This is a confusing answer: "So I have display, but it's running off my monitor's graphics, not the video card." What do you mean? If the monitor is connected to the video card, than the signal has to be from the 7750. Did you install AMD's Catalyst drivers from http://www.amd.com/en-us (Drivers + Support)?

CG5040 · Dec 27, 2014

When I run the control center it says that there isn't even an AMD card in the computer, and last i checked the drivers were up to date, this all started when I changed the RAM and the processor.

GhislainG · Dec 27, 2014

If you reinstall the old CPU then the AMD 7750 GPU is detected properly?

CG5040 · Dec 27, 2014

Yes, I tried that and the card was detected.

GhislainG · Dec 27, 2014

Since the i7-875k officially is supported, could you try another video card to see if you have the same issue when using the new CPU? I presume the new CPU is used; it could also be the source of the issue.

CG5040 · Dec 27, 2014

The CPU is brand-new out of the box. I can probably get my hands on the video card that I had before this present one....a friend borrowed it awhile back and is no longer using it. I probably couldn't get it back until tonight or tomorrow, but I'd be willing to try that....I just want to get this thing running correctly!

GhislainG · Dec 27, 2014

A CPU upgrade shouldn't cause that type of issue, particularly if you reset the BIOS to the default settings after the upgrade.

CG5040 · Dec 27, 2014

That's why I'm stumped. The CPU and RAM are the only things I changed/upgraded. I just again reset the BIOS to the default settings, no change. I think I'll try re-installing the drivers from the link you posted, and I'll let you know if there's any change. I won't be able to do it till tonight, though, because I was just called into work again. Thank you for continuing to try to help me get this fixed.

CG5040 · Dec 28, 2014

GhislainG: For a second time I re-installed the drivers for my video card and this time my video card was detected and the graphics are now running through the video card not just the standard monitor graphics, with new CPU and new RAM. Thank you all for your help! Happy Holidays!!!

GhislainG · Dec 28, 2014

Glad you got it working!

CG5040 · Dec 28, 2014

Me, too! Thanks again for not giving up on me!!

After upgrade, Video Card Not Detected

Reputable

Distinguished

Reputable

Titan

Legenda in Aeternum

Titan

Reputable

Reputable

Reputable

Titan

Reputable

Titan

Reputable

Titan

Reputable

Titan

Reputable

Reputable

Titan

Reputable

Share this page