I received 3 computers from work. 1 of them had a bad lite on 300w PSU and or mobo damage. The other computer has the same hardware( psu unknown condition) but caused a 4 pin USB to catch fire causing mobo damage. I have a fully operational computer with a dell PSU 250w. I am wondering if it will be ok for a little bit until I can buy a better psu. I am converting this into a gaming pc. I just bought a 1050ti. The working pc is a dell optiplex 790 with i5 2400. I can supply pictures of psu and mobo(damage) if needed.
My question is will the 250w be ok for gaming for a few months until I can get new psu? Also is it safe trying the 300w to see if it will work? Will it cause damage to the fully functional pc if I use that psu that caused the USB 4 pin to catch fire?
Any help would be greatly appreciated