pyle pldd75bg blank white screen

I just installed a PYLE PLDD75BG double din dvd player with navigation etc. the first couple times i turned it on it came on working ok i didnt really have it on very long because i was still finishing up the mounting and wiring. Now i tried to turn it on again and all i get is blank white screen and when i try to push any buttons either on the head unit or on the remote nothing happens nor do i hear any beep like before when pushing any of the buttons. I tried to reset the unit via the tiny reset button but maybe i didnt do it right (not sure if its possible to inncorrectly reset this device but still isnt working) Also is there any special installation issues i should know about as far as the wiring and numerous audio/video,cam etc plugs in the back. Thanks for your time i really would appreciate any help. Mike

oh yea its in a 99 gmc sierra if that helps...

Pioneer sells a nav unit for around 800 dollars. You paid 200 or 300 dollars for this Pyle unit, and you are wondering why it broke. Is this correct?

so what your saying besides that you obviously like pioneer over pyle is that i have a pyle of junk is that correct?

I said nothing about Junk. A Pyle of something is correct.