2 psu in one computer?

[Lodlike8]

Can I have one 300 watt power supply run my computer and then a separate psu at 500w run my GPU only? I don't know if this will work but of course my GPU will be connected to MOBO obvi. Please tell me if this is possible

 

[USAFRet]

Possible? Yes, people have done it.
Recommended? No.

Why not just get a good PSU of the proper size?
What make/model are the devices you have?

 

[EAJuggalo]

It should work, but where are you going to put the second PSU? I'm not aware of any cases that are designed for a second PSU.

 

[jediTT]

I'm guessing you're trying to get a really good GPU to work with a prebuilt dell or other brand PC?

 

[Lodlike8]

Possible? Yes, people have done it.
Recommended? No.

Why not just get a good PSU of the proper size?
What make/model are the devices you have?

Why I'm saying to do this is because I just got a brand new 500W psu because my 300 watt didn't have a PCI connector for my brand new GPU. So I setup my 500w psu but of course with my luck the computer turns on and all fans running but won't display, and I plugged hdmi into MOBO, not GPU( because GPU fans were not spinning) so I was trying to fix it but I could not get it to work, ( if you know how to fix please help) so I thought that my old psu worked fine with the computer so I plug that up with the MOBO and everything, but since GPU won't go into that then my other psu will power that. Any thought on what to do? Sorry a lot lol

 

[Lodlike8]

I'm guessing you're trying to get a really good GPU to work with a prebuilt dell or other brand PC?

No read what I just wrote.

 

[Lodlike8]

EAJuggalo: that's why I posted here lol

 

[USAFRet]

Possible? Yes, people have done it.
Recommended? No.

Why not just get a good PSU of the proper size?
What make/model are the devices you have?

Why I'm saying to do this is because I just got a brand new 500W psu because my 300 watt didn't have a PCI connector for my brand new GPU. So I setup my 500w psu but of course with my luck the computer turns on and all fans running but won't display, and I plugged hdmi into MOBO, not GPU( because GPU fans were not spinning) so I was trying to fix it but I could not get it to work, ( if you know how to fix please help) so I thought that my old psu worked fine with the computer so I plug that up with the MOBO and everything, but since GPU won't go into that then my other psu will power that. Any thought on what to do? Sorry a lot lol

Get a refund for the 500 watt device, and buy something that will actually work.
or
Figure out why putting the new 500 watt PSU didn't work. I'm suspecting it is not connected correctly, or it is simply a bad/broken device.

 

[Lodlike8]

n

 

[Lodlike8]

Possible? Yes, people have done it.
Recommended? No.

Why not just get a good PSU of the proper size?
What make/model are the devices you have?

Why I'm saying to do this is because I just got a brand new 500W psu because my 300 watt didn't have a PCI connector for my brand new GPU. So I setup my 500w psu but of course with my luck the computer turns on and all fans running but won't display, and I plugged hdmi into MOBO, not GPU( because GPU fans were not spinning) so I was trying to fix it but I could not get it to work, ( if you know how to fix please help) so I thought that my old psu worked fine with the computer so I plug that up with the MOBO and everything, but since GPU won't go into that then my other psu will power that. Any thought on what to do? Sorry a lot lol

Get a refund for the 500 watt device, and buy something that will actually work.
or
Figure out why putting the new 500 watt PSU didn't work. I'm suspecting it is not connected correctly, or it is simply a bad/broken device.

why is it bad to have 2 PSUs in one

 

[USAFRet]

Possible? Yes, people have done it.
Recommended? No.

Why not just get a good PSU of the proper size?
What make/model are the devices you have?

Why I'm saying to do this is because I just got a brand new 500W psu because my 300 watt didn't have a PCI connector for my brand new GPU. So I setup my 500w psu but of course with my luck the computer turns on and all fans running but won't display, and I plugged hdmi into MOBO, not GPU( because GPU fans were not spinning) so I was trying to fix it but I could not get it to work, ( if you know how to fix please help) so I thought that my old psu worked fine with the computer so I plug that up with the MOBO and everything, but since GPU won't go into that then my other psu will power that. Any thought on what to do? Sorry a lot lol

Get a refund for the 500 watt device, and buy something that will actually work.
or
Figure out why putting the new 500 watt PSU didn't work. I'm suspecting it is not connected correctly, or it is simply a bad/broken device.

why is it bad to have 2 PSUs in one

1. Where will you mount it?
2. How will you turn both on at the same time?
3. It is far, far better to use the correct device, rather than trying to cobble together two inadequate parts.

Why didn't the 500watt PSU work?
Is it enough to power your parts? A detailed list of your PC config would help here.

 

[Lodlike8]

Possible? Yes, people have done it.
Recommended? No.

Why not just get a good PSU of the proper size?
What make/model are the devices you have?

Why I'm saying to do this is because I just got a brand new 500W psu because my 300 watt didn't have a PCI connector for my brand new GPU. So I setup my 500w psu but of course with my luck the computer turns on and all fans running but won't display, and I plugged hdmi into MOBO, not GPU( because GPU fans were not spinning) so I was trying to fix it but I could not get it to work, ( if you know how to fix please help) so I thought that my old psu worked fine with the computer so I plug that up with the MOBO and everything, but since GPU won't go into that then my other psu will power that. Any thought on what to do? Sorry a lot lol

Get a refund for the 500 watt device, and buy something that will actually work.
or
Figure out why putting the new 500 watt PSU didn't work. I'm suspecting it is not connected correctly, or it is simply a bad/broken device.

why is it bad to have 2 PSUs in one

1. Where will you mount it?
2. How will you turn both on at the same time?
3. It is far, far better to use the correct device, rather than trying to cobble together two inadequate parts.

Why didn't the 500watt PSU work?
Is it enough to power your parts? A detailed list of your PC config would help here.

AMD A10 7700k
Asrock MOBO
Seagate HDD 500GB
CD Drive ASUS
GTX 750 TI Geforce GPU
500W LEPA PSU (just bought an hour ago)

it turns on and all fans run except GPU (i need to run drivers of course) but no display? HDMI is plugged into MOBO and they are not loose. Should I reset CMOS? will that fix? Would that Wipe Windows 10?

 

[USAFRet]

Possible? Yes, people have done it.
Recommended? No.

Why not just get a good PSU of the proper size?
What make/model are the devices you have?

Why I'm saying to do this is because I just got a brand new 500W psu because my 300 watt didn't have a PCI connector for my brand new GPU. So I setup my 500w psu but of course with my luck the computer turns on and all fans running but won't display, and I plugged hdmi into MOBO, not GPU( because GPU fans were not spinning) so I was trying to fix it but I could not get it to work, ( if you know how to fix please help) so I thought that my old psu worked fine with the computer so I plug that up with the MOBO and everything, but since GPU won't go into that then my other psu will power that. Any thought on what to do? Sorry a lot lol

Get a refund for the 500 watt device, and buy something that will actually work.
or
Figure out why putting the new 500 watt PSU didn't work. I'm suspecting it is not connected correctly, or it is simply a bad/broken device.

why is it bad to have 2 PSUs in one

1. Where will you mount it?
2. How will you turn both on at the same time?
3. It is far, far better to use the correct device, rather than trying to cobble together two inadequate parts.

Why didn't the 500watt PSU work?
Is it enough to power your parts? A detailed list of your PC config would help here.

AMD A10 7700k
Asrock MOBO
Seagate HDD 500GB
CD Drive ASUS
GTX 750 TI Geforce GPU
500W LEPA PSU (just bought an hour ago)

it turns on and all fans run except GPU (i need to run drivers of course) but no display? HDMI is plugged into MOBO and they are not loose. Should I reset CMOS? will that fix? Would that Wipe Windows 10?

If you have a dedicated GPU, why is the monitor plugged into the motherboard video port?

 

[Lodlike8]

Possible? Yes, people have done it.
Recommended? No.

Why not just get a good PSU of the proper size?
What make/model are the devices you have?

Why I'm saying to do this is because I just got a brand new 500W psu because my 300 watt didn't have a PCI connector for my brand new GPU. So I setup my 500w psu but of course with my luck the computer turns on and all fans running but won't display, and I plugged hdmi into MOBO, not GPU( because GPU fans were not spinning) so I was trying to fix it but I could not get it to work, ( if you know how to fix please help) so I thought that my old psu worked fine with the computer so I plug that up with the MOBO and everything, but since GPU won't go into that then my other psu will power that. Any thought on what to do? Sorry a lot lol

Get a refund for the 500 watt device, and buy something that will actually work.
or
Figure out why putting the new 500 watt PSU didn't work. I'm suspecting it is not connected correctly, or it is simply a bad/broken device.

why is it bad to have 2 PSUs in one

1. Where will you mount it?
2. How will you turn both on at the same time?
3. It is far, far better to use the correct device, rather than trying to cobble together two inadequate parts.

Why didn't the 500watt PSU work?
Is it enough to power your parts? A detailed list of your PC config would help here.

AMD A10 7700k
Asrock MOBO
Seagate HDD 500GB
CD Drive ASUS
GTX 750 TI Geforce GPU
500W LEPA PSU (just bought an hour ago)

it turns on and all fans run except GPU (i need to run drivers of course) but no display? HDMI is plugged into MOBO and they are not loose. Should I reset CMOS? will that fix? Would that Wipe Windows 10?

If you have a dedicated GPU, why is the monitor plugged into the motherboard video port?

I tried plugging it into gpu as well but fans aren't even running on the GPU so??? Also the led light turns green on the GPU saying thay the PCI connector is plugged in, it is pushed all the way into my MOBO as well, but no fans.

 

[USAFRet]

Did a picture appear?
With some GPU's, the fans only run when they are needed.

 

[Lodlike8]

Did a picture appear?
With some GPU's, the fans only run when they are needed.

oh ok, but no picture still. its all connected so I dont know.

 

[Lodlike8]

Did a picture appear?
With some GPU's, the fans only run when they are needed.

sooo...

 

[rcald2000]

@Lodlike

Here are my suggestions and I apologize if I'm repeating something that's already been said.

* Doesn't the AMD A10 7700k have integrated graphics? If so, have you disabled it in the BIOS? That's sounding like the most likely cause here. If you're sure that's set proper then continue down this list.
* Use only one power supply; the new 500 watt unit that you just purchased. Do not try to also add your old 300 watt power supply. Lack of power is not related to your problem here.
* Honestly I'm not 100% convinced that your GTX 750 TI wouldn't have worked on your old 300 watt PSU, but you can never go wrong with having more power, so just leave the 500 watt unit in place.
* Unplug and re-plug the DVI cable on both the end plugged into the video card and the end plugged into the monitor.
* Unplug the power connected to the monitor for ten seconds, then plug it back in.
* On the monitor - check the display input setting. If it's set to auto then change it directly to DVI and see if that makes a difference.
* Does you video card have two DVI connections? If so, plug the cable into the other one.

FYI: I've purchased four video cards within the past year: one MSI GTX 970 and three EVGA GTX 980 Ti's, and none of them spun their fans when the computers were turned on. They only started to spin when I started pushing graphics during prolonged game play.

FYI: Some GTX 750 Ti's have a 6 pin PCIe connector and some don't. I know for a fact that EVGA notified me that these connectors are optional on the GTX 750 TI, for people that want to overclock them beyond factory. They will worth even if you don't connect them. I "assume" it's the same case for other manufacturers.

 

[Lodlike8]

@Lodlike

Here are my suggestions and I apologize if I'm repeating something that's already been said.

* Doesn't the AMD A10 7700k have integrated graphics? If so, have you disabled it in the BIOS? That's sounding like the most likely cause here. If you're sure that's set proper then continue down this list.
* Use only one power supply; the new 500 watt unit that you just purchased. Do not try to also add your old 300 watt power supply. Lack of power is not related to your problem here.
* Honestly I'm not 100% convinced that your GTX 750 TI wouldn't have worked on your old 300 watt PSU, but you can never go wrong with having more power, so just leave the 500 watt unit in place.
* Unplug and re-plug the DVI cable on both the end plugged into the video card and the end plugged into the monitor.
* Unplug the power connected to the monitor for ten seconds, then plug it back in.
* On the monitor - check the display input setting. If it's set to auto then change it directly to DVI and see if that makes a difference.
* Does you video card have two DVI connections? If so, plug the cable into the other one.

FYI: I've purchased four video cards within the past year: one MSI GTX 970 and three EVGA GTX 980 Ti's, and none of them spun their fans when the computers were turned on. They only started to spin when I started pushing graphics during prolonged game play.

FYI: Some GTX 750 Ti's have a 6 pin PCIe connector and some don't. I know for a fact that EVGA notified me that these connectors are optional on the GTX 750 TI, for people that want to overclock them beyond factory. They will worth even if you don't connect them. I "assume" it's the same case for other manufacturers.

I got a new PSU only because my old one had no PCI connector, So i had to get a new one. My display finally turned on but GPU is no getting read still, i am gonna disable AMD graphics like you said and see what that does.