from krystle i am an electronic tec:
what i have found the big difference between the philips dvdr3455h and the dvdr3575h is the
dvdr3455h boot from software on the hard drive and the dvdr3575h boot from an eprom.
the dvdr3455 has both booth software and movie edit software, if the hard drive become
bad in the 3455 or the software become corrupted it wil hang at the philips logo screen.
the dvdr3575h will boot with a bad hard drive or no hard drive at all you will you wont be able to
capture your video to the hard drive.
if the movie edit software become corrupt or damage when you press record button
it will just lock up the recorder.you will need a software reload if the software become corrupt.
if you need a reload on your hard drie email me i will tell you what you need to do my email is
[email protected]