Ps3 that turns on but I get no video or audio I tried the reset but I still have the same problem Can someone please help me

i have had this problem a few times but i know how to fix it. the problem most likely is that if you usually play with the RWY(red, white, yellow) cables and you have recently used it on an HDMI cable you have to switch it back to the standard cables. if you are trying to play on an HDMI cable and you usually use the RWY cables you have to first switch it to the HDMI settings. to do this first go to settings with whatever both cables plugged in. go to the option on your tv that matches your current settings and that matches the placement of the plugs(ex HDMI 1, HDMI2, Component, ect). when you can see the screen go to the settings section on the XMB(Cross Media Bar). Go down until you reach the display option and select it. now depeneding on what type of TV you are using choose the style of plug you are using(HDMI or Standerd). when you have done this the screen will go black. now you much change the input of your TV to the selection that you have choosed on your display screen(Component or HDMI). When you select the correct screen it should show back up. Now select everyone of the audio options and you will now have audio and display. if this does not work i would talk to a tech expert or the SONY tech support.