Yes, you can. Just make sure that you have a right kind.
No, for the slim tower Dell Vostro 200, you will need a specified PATX psu. Only the mini tower can accommodate mATX-ATX psu's.
You have to buy a "Dell" PSU meaning that DELL has a specific brand that you have to use. You'd continue like you would with any other psu... mark down where the wires go, unplug, slide the psu out, then put the new one in , replug the pins and you should be set.
RAM, storage, Motherboard, PSU.
Check the power cable and the PSU.
The older format, AT, will power up without a motherboard. ATX form factor needs motherboard connection to power up. However, for about $15 you can purchase a PSU tester that plugs onto the psu to allow it to power up without the motherboard. Try: dalco.com, or FRY's etc. Actually, ATX will start without a motherboard, or a 'PSU tester'. The ATX motherboard power connector will have 1 green wire, and several wires of other colours. Find a bit of lose wire, it doesnt need to be very long. Make sure both ends of the wire are stripped. Push one end of the lose wire into the 'hole' that the green wire connects to, then push the other end into any 'hole' that has a black wire leading to it . The PSU should start, and stop when you remove the lose wire. == ==
The motherboard... Interconnects - CPU - HDD - RAM - Optical Drives - GPU - PSU
Motherboard RAM Hard Drive Disk (HDD) CD/DVD Rom PSU CPU Network card (if not build into motherboard) Graphics Card
The PSU, Power Supply Unit
Bad PSU, (power supply). Did not install motherboard right in case, and bad ground.
Grey wire is used to report to the motherboard that the PSU has passed all tests and ready to work. Some motherboards have hard times recognizing good signal, as result the motherboard will not start.
Proccessor (CPU), video card, PSU, Motherboard, Hard drive, Memory/RAM. the Network card and the sound card are normally integrated on the motherboard, but these are required too.
no, you would need to get a new psu.