Hi there. First time poster so apologies if this has been covered elsewhere!

I've got a bit of a problem with a 1001 PSP. When I switch the unit on, all I get is the power light staying lit but with no sound or display. If I insert a MS into the slot and power the system on, again the power light stays lit but then also the MS light and WIFI light are permanently lit. Can anyone help with what this problem might be? Thanks!