What to get exactly to get power supply to get to go from 250 watts to 300?

[Dancingchickens5000]

need computer tower power supply to go from 250 to 300 to run new graphics card, what exactly do i need to buy to make it happen?



I am a total noob at this, no clue what to get or do, any help would be helpful. thank you for your time.

Here are the system specs:
OS Name Microsoft Windows 7 Home Premium
Version 6.1.7601 Service Pack 1 Build 7601
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Manufacturer eMachines
System Model ET1330
System Type x64-based PC
Processor AMD Athlon(tm) II X2 235e Processor, 2700 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date AMI P01-A0, 8/13/2009
SMBIOS Version 2.6
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume2
Hardware Abstraction Layer Version = "6.1.7601.17514"
Installed Physical Memory (RAM) 6.00 GB
Total Physical Memory 5.75 GB
Available Physical Memory 2.62 GB
Total Virtual Memory 14.7 GB
Available Virtual Memory 10.7 GB
Page File Space 9.00 GB
Page File C:\pagefile.sys

 

[Someone Somewhere]

You would need a new powersupply. Upgrading an existing one is really not feasible.

Do you know if your existing one is a standard ATX size?

What GPU do you want to add?

 

[Dancingchickens5000]

I am asking this because i got a new graphics card, nvidia geforce 730 for my tower pc and put it into the pci slot, changed the bios settings to run graphics from such pcie, uninstalled the current grapgics card which Nvidia 640 by 480, restarted the pc, then the disc dont work and the nvidia company is telling me its not working because the power supply is too low. so anyone got any ideas? thank you for your time.

 

[Dancingchickens5000]

gpu that i am trying to get to work is a is nvidia geforce 730 graphics card in my pci slot, it fits perfectly
i have no idea what a atx is, all is stock right out of the box.

 

[synphul]

MERGED QUESTION
Question from Dancingchickens5000 : "What power supply to get to go from 250 watts to 300?"

I am a total noob at this, no clue what to get or do, any help would be helpful. thank you for your time.

Here are the system specs:
OS Name Microsoft Windows 7 Home Premium
Version 6.1.7601 Service Pack 1 Build 7601
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Manufacturer eMachines
System Model ET1330
System Type x64-based PC
Processor AMD Athlon(tm) II X2 235e Processor, 2700 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date AMI P01-A0, 8/13/2009
SMBIOS Version 2.6
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume2
Hardware Abstraction Layer Version = "6.1.7601.17514"
Installed Physical Memory (RAM) 6.00 GB
Total Physical Memory 5.75 GB
Available Physical Memory 2.62 GB
Total Virtual Memory 14.7 GB
Available Virtual Memory 10.7 GB
Page File Space 9.00 GB
Page File C:\pagefile.sys

Why the need to only bump up 50 watts? In reality 350-450w PSUs should also work just fine. Plus you enter into an area, depending on the currently unknown budget, where you can have modular or semi-modular cabling, which make for cleaner and cooler builds.

If you look at CPU tier lists, pretend any models found on Tiers 4 or 5 do not exist. Avoid Tier 3 unless your budget demands otherwise. Focus on Tier 1 and Tier 2 PSUs. That said, stick with the models in those last two tiers and you should have a solid foundation.

 

[Dancingchickens5000]

I wanted to bump it up cause my machine is not detecing the card at all, the fan spins and nothing else happens. it is a Gigabyte 2gb GDDRS Nvidia Geforce GT 730 Graphics card PCI 2.0 Express slot edition. I did not see any place to hook up any new wires. but i also dont know what i'm doing. hope that helps you all.

 

[Dancingchickens5000]

oh and this is a link to my exact make and model of my machine http://www.pcmag.com/article2/0,2817,2384530,00.asp