Installed New Motherboard, CPU, PC Won't Even Boot

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Bender_TheRobot

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Feb 13, 2014
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I just installed a new Motherboard and CPU as well as replaced my HD (1TB) and RAM (4GB). I have a 480 watt PSU as well as a Nvidia Gfx Card. When I go to boot the PC nothing happens, not even the psu or fans turn on. The connections look good and the only thing appearing to get power is the LED power button. A friend suggested that I made need a higher wattage PSU, possibly 750-800 watts. Can anyone advise before I go an purchase a new PSU?
 
Solution
C
You can look at the label on your power supply for the +12v amperage rating.

Some power supplies have multiple +12v rails. You can combine the ratings and subtract some to get a rough +12v output rating.

From your link to video card
System Requirements:
525W PCI Express-compliant system power supply with a combined 12V current rating of 38A or more*
Two 6-pin PCI Express supplementary power connectors -or- One 6-pin PCI Express and two 4-pin peripheral supplementary power connectors
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AnEwG

AnEwG

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Dec 31, 2013
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It is not just the wattage, the brand and model of PSU is very important. I have never heard of a brand PSU that is rated @ 480w. What is your graphics card model?

Where did you get this ancient card from?
Also this motherboard doesn't have VRM heat sink which is really ridiculous.
 
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ubercake

ubercake

Splendid
Oct 28, 2009
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Not sure you need more wattage so much.

What is the make/model of your motherboard and does it have its own video out?

With the PC off, remove any Optical drives, HDD or SDD and if your motherboard has a video out on it, connect your monitor to the motherboard video out and remove the GPU. Reseat the RAM and make sure the CPU cooler is seated properly. When you boot up, can you get to the BIOS screen now?

If you can't get to the BIOS screen, is the 24-pin connection securely connect to the motherboard? Is the 8-pin CPU power connected to the motherboard? Is the CPU power connected to the motherboard?
 
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Calvin7

Titan
Feb 19, 2013
11,725
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You can look at the label on your power supply for the +12v amperage rating.

Some power supplies have multiple +12v rails. You can combine the ratings and subtract some to get a rough +12v output rating.

From your link to video card
System Requirements:
525W PCI Express-compliant system power supply with a combined 12V current rating of 38A or more*
Two 6-pin PCI Express supplementary power connectors -or- One 6-pin PCI Express and two 4-pin peripheral supplementary power connectors
 
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Solution
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Bender_TheRobot

Honorable
Feb 13, 2014
6
0
10,510
Katandude:

Nvidia 260 GTX Maxcore, I hyperlinked all the parts in the OP.

AnEwG:

It's a 500 watt Rosewill but it's actually rated 480 in the specs. The rest of your reply is not helpful.

Ubercake:

I will try this, thanks for the helpful reply.

Calvin7:

Thanks for the info.
 
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