PC won't detect GPU if i insert more than 2 gb of ram

[anthonyme00]

Hi, i am having a problem with my pc. my pc won't detect my GPU if more than 2gb ram are inserted! if i insert only one 2gb ram, it detects the GPU just fine. Weird thing is, the GPU still outputs video, even if my pc doesn't detect the GPU.

Specs:
Windows 7 Professional 64-bit Service Pack 1
Motherboard: ECS 945GCT-M2/1333
BIOS: Default System BIOS
Processor: Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz (2 CPUs), ~3.0GHz
Memory: 2048MB RAM DDR2 Kingston(6400) <--Could the different brand be the problem?
Other Uninserted Memory: 2048MB RAM DDR2 VGEN(6400) (You probably haven't heard of this brand)
DirectX Version: DirectX 11
GPU: Nvida GTX 550 TI(ECS)
PSU: 500W E-PRO (You probably haven't heard of this brand too)

If i insert my other GPU, which is an AMD Radeon HD 5570(PowerColor), my pc detects the GPU just fine, even with 4 gb ram.

Any idea what's causing the problem?

 

[Someone Somewhere]

That's damn strange.

Are you certain you're running 64-bit?

Where are you looking to see if it detects it?

I'd generally suggest replacing the PSU - it's not likely to be the cause of this particular problem, but no-name brands tend to skimp on the safety features that stop it catching fire... something from tiers 1 or 2 of our PSU list: http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

 

[anthonyme00]

That's damn strange.

Are you certain you're running 64-bit?

Where are you looking to see if it detects it?

I'd generally suggest replacing the PSU - it's not likely to be the cause of this particular problem, but no-name brands tend to skimp on the safety features that stop it catching fire... something from tiers 1 or 2 of our PSU list: http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

I looked at windows device manager, when i plugged in the second ram, the gtx 550 ti isn't listed on the device manager anywhere. but, when i pull it back out, the gpu is there again. However, if i use a low power card, such as the HD 5570, i can use both ram just fine.

 

[anthonyme00]

Anyone?

 

[smangione]

Have you tried other dim slots?

 

[maxalge]

Anyone?

my guess is that power supply is not a true 500w

have you tried both sticks one at a time to see if it works with both alone?

 

[anthonyme00]

Anyone?

my guess is that power supply is not a true 500w

have you tried both sticks one at a time to see if it works with both alone?

Both of them work. I tested it one by one. Also, i only have 2 dimm slots.

 

[maxalge]

Anyone?

my guess is that power supply is not a true 500w

have you tried both sticks one at a time to see if it works with both alone?

Both of them work. I tested it one by one. Also, i only have 2 dimm slots.

then most likely it is a power issue

 

[smangione]

Then I'm guess it's the power supply like Maxalge said

 

[anthonyme00]

Then I'm guess it's the power supply like Maxalge said

yeah, it's probably that. My usb mouse doesn't get any power from the back port.

 

[anthonyme00]

Anyone?

my guess is that power supply is not a true 500w

have you tried both sticks one at a time to see if it works with both alone?

Both of them work. I tested it one by one. Also, i only have 2 dimm slots.

then most likely it is a power issue

hey, i just replaced my PSU with an 400W enermax PSU. It still doesn't work. What do you suggest i do?

 

[maxalge]

Anyone?

my guess is that power supply is not a true 500w

have you tried both sticks one at a time to see if it works with both alone?

Both of them work. I tested it one by one. Also, i only have 2 dimm slots.

then most likely it is a power issue

hey, i just replaced my PSU with an 400W enermax PSU. It still doesn't work. What do you suggest i do?

enermax is also garbage >.>

 

[anthonyme00]

Anyone?

my guess is that power supply is not a true 500w

have you tried both sticks one at a time to see if it works with both alone?

Both of them work. I tested it one by one. Also, i only have 2 dimm slots.

then most likely it is a power issue

hey, i just replaced my PSU with an 400W enermax PSU. It still doesn't work. What do you suggest i do?

enermax is also garbage >.>

still, it should atleast work, right? i mean, it got 20 amps on two +12v rail.

 

[maxalge]

Anyone?

my guess is that power supply is not a true 500w

have you tried both sticks one at a time to see if it works with both alone?

Both of them work. I tested it one by one. Also, i only have 2 dimm slots.

then most likely it is a power issue

hey, i just replaced my PSU with an 400W enermax PSU. It still doesn't work. What do you suggest i do?

enermax is also garbage >.>

still, it should atleast work, right? i mean, it got 20 amps on two +12v rail.

not necessarily, garbage power supplies often lie about their wattage

 

[Utkarsh Mahajan]

Get a corsair psu.

 

[anthonyme00]

Anyone?

my guess is that power supply is not a true 500w

have you tried both sticks one at a time to see if it works with both alone?

Both of them work. I tested it one by one. Also, i only have 2 dimm slots.

then most likely it is a power issue

hey, i just replaced my PSU with an 400W enermax PSU. It still doesn't work. What do you suggest i do?

enermax is also garbage >.>

still, it should atleast work, right? i mean, it got 20 amps on two +12v rail.

not necessarily, garbage power supplies often lie about their wattage

but, ram doesn't consume that much power, do they?
also, i thought enermax is good?
thanks anyway.