New pc build

[Damson]

This is my first time stepping out on my own in to the world of pc building but I have already had a pc I got an old hp elitedesk 800 g1 for free and it has a better cpu i5-4570 but that's about it while I have transplanted my old PCs  gtx 1050, my ram and my hdd I am worried about the stability of it's old psu I attempted to swap my cooler master psu into this case but the connections were completely different I would be interested in finding out whether or not I can get a better psu for this system or if I should just work with what I have the current psu is a 240w max (also I am looking for suggestions as to how to increase airflow as this case has only two fans and no connectors or spaces for more I am up to the suggestion of where best to cut a hole)

[Fasauceome]

quick google search makes it look like the motherboard does not use standard connectors for motherboard power, so you're out of luck. It does, however, appear to be standard micro ATX so any cheap B85 or H81 motherboard will do.

 

If this is the motherboard in question, anyway. If not, then circumstances would be different.

https://www.amazon.com/HP-Motherboard-737728-001-717372-002-737728-501/dp/B01BU8KZTQ

Of course, there is also a small form factor version of the elitedesk, so if you have that, you definitely won't be fitting any reasonably priced PSUs in there.

[Damson]

ahh damn youre right it is an sff case is there anyway possible i could find out how many watts the build as it stands actually consumes or is it safe to assume with the gtx 1050 installed i am practically right within what is reasonable for power consumption on a 240w psu