is there ANY chance this could be caused by mucking around inside the case? Because I just performed zapwizard's usb charge mod (with a separate switch) and it worked fine when i powered it on the first few times after (even have pictures of it working afterwards) but then i got WSOD after rebooting again (i rebooted because the default 'web' program was crashing).
Flasher utility doesn't work: it says it can't find the device (i had my switch set so that plugging in USB didn't charge the unit, so it doesn't think that the charger is plugged in).
Tablet does at least recognize when USB is plugged in because it makes a noise and pops up a message (which i can't read obviously, probably telling me it can't mount the MMC because it's in use as swap)

obviously there's no way I can send it in for warranty - i got it secondhand off ebay and modified the hardware of at least 3 pieces (back plastic housing, silver shell [stylus accessibility and removed the front center piece so i can remove the cover without interfering with the cords], and the USB plug itself). I'll just suck it up and drop another $150 on a new one because it's worth it (and I already purchased all the accessories and such for GPS).

so back to my original question: could this be in any way caused be the hardware mods I did or did my luck turn at the wrong time?
next question: does this ruin the LCD or just the controller?

EDIT:
can anyone help me log in remotely to the tablet to see if it really does still work? Unfortunately it does not automatically connect to wifi so i will have to do some screen guesswork to try to get it connected