NEED HELP. Computer won't power up

[soxhawk]

Here is all the spec to the computer:
Intel E7500 Processor (2.93 GHz) - brand new
MSI G41TM-E43 Motherbaord - brand new
4GB DDR2 RAM - brand new
30 GB HDD - Will upgrade to 500 GB in the next week
HP DVD Player

Here's the problem:
When trying to power up the system, nothing happens. Everything is in the right place. NOTE: My power supply has a 20-pin plug and the motherboard has a 24-pin adapter. ALSO NOTE: My power supply is about 5 years old, and only has 200W.
Should I upgrade the power supply to something bigger (400W - 500W) or is this something more serious?

If you need more info, just ask.
Thanks.

 

[babachoo]

Have you tested your PSU? You could try the paper clip test just to see if it'll power up. But are you saying that your PSU only has a 20 pin plug but no 4 or 8 pin plug to power the motherboard? Or did you forget to plug in the mobo power? I'm a little confused, but if your PSU tests ok with a paper clip, you probably failed to power the mobo via 4 or 8 pin plug, or just don't have that option because of your PSU's lack of compatible plugs.

 

[shortstuff_mt]

Let us know how it goes after you've performed EVERY step in the READ before posting about boot problems! sticky at the top of the forum.