using 150w power supply on dell inspiron one 2320 AIO that needs 180w

[nvidia]

i was given this pc for free lady 2 blocks away was cleaning out there house she said it work but she lost power supply and its been sitting there for 4 years unused

im using a power supply from a hp all in one that my sister gave me when her one died its says volts ect just 150watts

i get this message shown in the photo i press f1 and it says something like press f1 to reboot or f2 to go into bios

i really don't want to spend like 50-65 nzd on a 180watt power supply only to find out that the computer has something wrong with it

is there a way to be able to use the 150w supply and test the pc then buy the correct one? 
i know on some other dell all in one pc you can bypass it somehow and boot into the computer but it will just run a little slower

[Halcyon]

You're asking whether you can use an undersized power supply on a machine which demands more? No.

On some laptops you can use a lower wattage PSU at the expense of prolonged charging time, but it seems what you're asking for is to make the machine more energy efficient after the fact. Even if there was a hacky method to bypass this check, you might find that stability and longevity will suffer. It would be like putting regular unleaded fuel into a car that requires premium 95/98 as a minimum. The system wasn't designed for this.

150 watts is already pretty much nothing in terms of modern computing. My laptop has an optional 230W power supply.

[nvidia]

im so dumb there is no hdd in the pc 

i did more googling and found out i can run it with a 150w power adapter it will just run slower so it will be enough for me to test it and if its working fine i will get the 180w adapter

i have an older 1tb hdd im going to test it with then get a cheap 240gb ssd for it or maybe a 480gb one if i find one cheap would make a nice media pc and to play old pc games on

[Ranayna]

Dell Laptops, and according to the displayed message i would assume AIOs too, talk to the power supply. I am not sure about the details, it is some kind of one wire protocol as far as i know.
It can't talk to your HP supply (i'm surprised it does even fit), so it gives you that warning.
I would also give a similar warning if you connect a too small Dell supply.
And yes, you can skip those warnings (at least you can with the "too small Dell supply") but the system might not start up, might run severely throttled, and/or the battery will not charge.

I suspect that the system will not even try to pull full power, so the supply might be safe, but i am not sure about that. So prepare for your supply to shut down or go boom :p

[madires]

Dell identifies PSUs/chargers by using an 1-Wire EPROM in the PSU: https://hackaday.com/2014/03/03/hacking-dell-laptop-charger-identification/

[screwbreaker]

You can disable the check in the bios.

[LeonR]

You can use the lower wattage PSU for testing. If it's working fine, I suggest buying the specced one.

Just make sure that the voltages are compatible same before plugging.

[PKTKS]

Usually DELL bundles the LITE-ON PSUs  which are rather expensive
for the power ratings.

A typical 200W or less costs more than a regular 500W PSU here..

Today they are even more expensive an just in case...

I replace them with those typical SMALL ATX ADAPTORS
with a regular S-360

Insanely more adequate for that..

Those corps. like to complicate simple issues...

Paul