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sapphire hd 7750 after plug in monitor says no signal detected vga/dvi

Last response: in Graphics & Displays
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September 23, 2013 9:09:15 PM

hye all...

i got a problem on installing a graphic card.. i just bought a new tower that is without a graphic... so today i just bought a graphic card that is Sapphire HD 7750 2GB DDR3.. the problem is after i plug in into my pcie slot and try to turn on the pc, monitors says No signal Detected vga/dvi.. then ive unplug monitor cable from gpu and use plug back on mobo display, then the monitor detect signal..

when i connect vga/dvi to gpu and turn on my pc, it sound like usual turn on but no display cause it says no signal detected... but my gpu fan is spinning...

ive seen alot of these problem on this and others forum.. so i tried many of those advice..

1) disable onboard display driver
2) remove ram for a few min and replug
3) reset cmos by jumper and battery
4) check all component to plug in nice and tight
5) bios display is set auto (because no option to manually set to pcie)

so ive tried all these advice but still nothing happen... so theres another option that people tell me to check on psu... my psu seems not support the card maybe since its shows on sticker that it is max output power is 200w@ 35degC 170W@ 50degC while the card is recommended to use 400W... so i thought that its true and ive tried change the psu to my old tower psu that is max=450W... but the same problem still occur (no signal detected).. so i assume that my old tower psu not that good since its make a loud sound...

#before that, ive send to the shop that i bought and they tried on their pc and its work well and i see their pc psu is 500W

so heres my tower specs

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System Information
------------------

Operating System: Windows 8 Single Language 64-bit
Language: English (Regional Setting: English)
System Manufacturer: Acer
System Model: Aspire MC605
BIOS: P11-A4
Processor: Intel(R) Pentium(R) CPU G2030 @ 3.00GHz (2 CPUs), ~3.0GHz
Memory: 2048MB RAM
Available OS Memory: 1928MB RAM
Page File: 2186MB used, 2430MB available
DirectX Version: DirectX 11

Display Devices
---------------
Card name: Intel(R) HD Graphics
Manufacturer: Intel Corporation
Chip type: Intel(R) HD Graphics Family
DAC type: Internal
Device Type: Full Device
Display Memory: 740 MB
Dedicated Memory: 32 MB
Shared Memory: 708 MB
Current Mode: 1366 x 768 (32 bit) (60Hz)
Monitor Name: Compaq W185q Wide LCD Monitor
Monitor Model: Compaq W185q
Monitor Id: HWP2850
Native Mode: 1366 x 768(p) (59.790Hz)
Output Type: HDMI

So the last attemp to make is buy a new psu since i assume my old psu 450W is already at its end? =p .... I hope i get alot of idea and information about this issue... i really blank now

Best solution

a b U Graphics card
September 23, 2013 9:20:58 PM

Is your monitor the older vga? if so you may not be able to use the dvi to vga adapter alot of cards wont work with them Recently bought a rafeon 7950 and when I open the box was a kind note stated vga to dvi will not work so that may be your problem.
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September 23, 2013 9:28:49 PM

johnnyb105 said:
Is your monitor the older vga? if so you may not be able to use the dvi to vga adapter alot of cards wont work with them Recently bought a rafeon 7950 and when I open the box was a kind note stated vga to dvi will not work so that may be your problem.


thx for your quick reply... my monitor is Compaq W185q Wide LCD Monitor... it got both vga and dvi pot.... ive tried using (monitor~gpu) vga~vga / dvi~dvi / dvi~hdmi .... but still got the same result no signal detected on monitor and it goes to sleep
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a b U Graphics card
September 23, 2013 9:39:37 PM

Do you have another monitor to test it with? is there a bios setting turn off that wont allow your pc to see the monitor.
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a b U Graphics card
September 23, 2013 9:42:19 PM

Your cpu has onboard graphics you need to go into the bios and shut it off and enable igp gpu ect to allow the the new card to work.
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September 24, 2013 4:57:23 AM

johnnyb105 said:
Do you have another monitor to test it with? is there a bios setting turn off that wont allow your pc to see the monitor.


unfotunately i dont have any monitor to try...but ive send my gpu to the store and they check with their tower n monitor (old monitor with only vga)... and signal detected which is im sure my monitor is alot better than his..
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September 24, 2013 4:58:45 AM

johnnyb105 said:
Your cpu has onboard graphics you need to go into the bios and shut it off and enable igp gpu ect to allow the the new card to work.


again... my bios doesnt allow me to manually enable and disable or choose wether to set pcie or onboard display... since its always auto
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