Okay well our hp computer would not turn on. We brought it to bestbuy and they said the power supply was dead. Since it was expensive to install it we decided to try it ourselves. Well all the wires were plugged in correctly, but when we power it up the fan starts and it sounds like it's working but the power does'nt stay on?
Have any idea what would be wrong or what we could do or try?
Or should we just have Geeksquad do it?

PLEASE HELP!!!!