Overclock.net › Forums › Graphics Cards › AMD/ATI › Graphics card not working
New Posts  All Forums:Forum Nav:

Graphics card not working

post #1 of 3
Thread Starter 
Hi,
I recently bought MSI HD 7790. It requires 500 watt PSU whereas I have 400 watt PSU. I thought it would work. But it didn't.
After installing the card when i started my PC, right when the windows was being loaded, PC turned off and after a while it restarted and then again turned off.
This card is (PCIe 3.0 x 16) but my motherboard is (PCIe 2.0 x 16). I want expert opinion about this problem. Is it the PSU problem or Motherboard (PCI) problem.

My PC's specifications:

Intel® Core™ i3-560 Processor (4M Cache, 3.33 GHz)
ASUS P7H55-M LX
4GB kingston
xpert ATX 400 watt.

waiting for your replies.
post #2 of 3
I have had no experience with that power supply, but I would have thought a decent 400w unit would power that system with the card with no problems. Try connecting the monitor to a display port from the motherboard, instead of the card.
My Rig
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 3570k Asus P8Z77-M Galaxy GTX 670 2GB GC Corsair 8GB DDR3 1600mhz 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 2TB Samsung SH-224BB Coolermaster Hyper 212 EVO Windows 7 64-bit 
MonitorKeyboardPowerCase
BenQ XL2420T Coolermaster Quickfire Pro Cherry Blue Mechanic... Antec HCG 520W Modular Power Supply Fractal Design Define XL R2 Black Pearl 
MouseMouse PadAudioAudio
Logitech G600 SteelSeries Qck Audio Technica ATH-AD700 Graham Slee Voyager Amplifier 
Audio
Asus Xonar Essence ST 
  hide details  
Reply
My Rig
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 3570k Asus P8Z77-M Galaxy GTX 670 2GB GC Corsair 8GB DDR3 1600mhz 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 2TB Samsung SH-224BB Coolermaster Hyper 212 EVO Windows 7 64-bit 
MonitorKeyboardPowerCase
BenQ XL2420T Coolermaster Quickfire Pro Cherry Blue Mechanic... Antec HCG 520W Modular Power Supply Fractal Design Define XL R2 Black Pearl 
MouseMouse PadAudioAudio
Logitech G600 SteelSeries Qck Audio Technica ATH-AD700 Graham Slee Voyager Amplifier 
Audio
Asus Xonar Essence ST 
  hide details  
Reply
post #3 of 3
lol i just had an issue with this with my brothers computer i installed a 7870 in his system and he had a 400w psu, then he tried playing bf3 ... poof... shutdown.. got him a 600w corsair PSU . now he is up and playing again, PCI 3.0 is backwards compatible with 2.0 so i would disregard that as a problem I would not think that it would be your psu entirely unless you have a generic one. 80 plus has better load efficieny. does your 7790 require an extra 6pin power cable? if so then i would say it is a power supply problem if not, then it is probably not your power supply, as PCI-E can only deliver 75w of power per expansion slot
Edited by powerdemon292 - 8/25/13 at 9:50pm
Dark Retribution
(21 items)
 
Concealed Fiend
(12 items)
 
 
CPUGraphicsRAMHard Drive
i5 3210m Nvidia GTX 660m 8GB DDR3 160mhz SODIMM 750GB 
Hard DriveOSMonitorKeyboard
Plextor 128GB mSATA SSD Windows 7 64bit PRO  14" 720p Standard Backlit 
CaseMouseMouse PadAudio
Asus ROG G46VW Razer Naga Razer vespuela Yasper standard headset with mic 
  hide details  
Reply
Dark Retribution
(21 items)
 
Concealed Fiend
(12 items)
 
 
CPUGraphicsRAMHard Drive
i5 3210m Nvidia GTX 660m 8GB DDR3 160mhz SODIMM 750GB 
Hard DriveOSMonitorKeyboard
Plextor 128GB mSATA SSD Windows 7 64bit PRO  14" 720p Standard Backlit 
CaseMouseMouse PadAudio
Asus ROG G46VW Razer Naga Razer vespuela Yasper standard headset with mic 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › Graphics card not working