what happend was that a plug melted in dvd drive and my mobo started to give me the power error beep and i tried a lot of things but it wont help!! please tell me what i should do or if i should rma it help much appreciated!!!!!!!
plug melted in the dvd drive....sounds like some things got fried. You will have to get a new psu (get a quality brand like corsair, pc power and cooling, ocz, etc to avoid this happening again) and hope that it didn't take any other components with it. If you get a new psu you can check the rest of the components with it but i wouldn't be surprised if your mobo etc got fried.
Here is a link to an inexpensive power supply tester: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Unless the plug that melted was the actual IDE conector, and not the 4-pin molex supplying it power (and I don't see how that could happen), it's probably unlikely that you fried your MOBO; much more likely that your power supply is cooked.