Does the display ever turn on??? I mean, if you cannot even see the Toshiba logo I don't think that your problem is software related?
You might want to open your folio and check if the hardware connector of the LCD panel is fitted correctly in its socket on the mainboard. I inadvertently unplugged it one time, as I was playing with folio's guts
Maybe, your connector just got loose in time.
However, if you are going to try and open your folio, the connector should be placed in the upper part of the device, just between the webcam and the hardware keys. Yes, you will need small hands and some practice
Sony Ericsson P800
> -> HTC S620 ->
-> Samsung Galaxy (GAOSP) ->
Samsung Galaxy S (CyanogenMod)
-> LG Optimus 2x (CyanogenMod) + Toshiba Folio 100 (CyanogenMod) + Acer Iconia Tab A100 (Stock + Root) --- I have ORD