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Can I power a laptop with a desktop psu?

I am planning to put a laptop (HP ENVY dv7-7334ea) into a desktop case for a project and I was wondering if anyone could help me out with trying to power it with a desktop psu instead of the charger? I believe it needs 18.5v at 3.5a. If anyone knows anything about this your help would be greatly appreciated!

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Vyger2 years ago

Even though it is an interesting idea I don't see the point. You nullify all the reasons for using a lap top to begin with. Such as portability. If you want a desktop then build a desktop. In general most notebooks are lacking in both video and ram and processors. Even the very expensive high end gaming notebooks are not as good as a true gaming rig.

As far as the power supply, ATX power supply's are turned on by the motherboards. You can't just push a power button in the case to turn it on. Even if the voltages were compatible you would need to rig a switch to turn it on since the button on the case will not work for that.

pac-man (author)  Vyger2 years ago

Reason I decided to do it like this is the laptop I got was a really good deal from a friend, i7 16gb ram,NVIDIA GeForce GT 635M and 2 1tb hdds .The case is completely destroyed so that's my plan.Better cooling + its solely for gaming/coding at my desk.A desktop psu can be turned on without a mb btw :) Unfortunately it does not appear feasible to get the voltage I need.

Vyger pac-man2 years ago

To turn one on you can use a power supply tester or you can jumper the correct pins. But if you get them wrong you can burn it up.

Vyger pac-man2 years ago

There are a bunch of these types of regulators on E bay. I bought a small one to control the voltage from a computer power supply to run some LED's and replace battery packs.

http://www.ebay.com/itm/Converter-Buck-Regulator-5...

Your problem might be in determining the wattage you need and if the buck regulator can meet it.

Vyger Vyger2 years ago

No, a desktop PSU doesn't have a 18.5 supply. So you need to use a laptop supply.

pac-man (author)  steveastrouk2 years ago

I know of that,just that I've seen people getting different voltages out of them when using a psu as a desktop power supply so I was hoping someone might of had an idea on how to do something like this. Ya never know :)

This isn't a possible combination. Use a laptop PSU.

+1

Laptop into a desktop !!

Is this is a fad, like when hackers used to put fish tanks into desktops ??