Recommended Diagnostics - Apple TV 1

Hi

I have a 1st gen Apple TV that was working fine until yesterday. It is still in Apple mode.

I would like recommendations for a flash to perform hardware diagnostics, as I think the HDD might be stuffed.

It will restart, but then freeze. I have restored the o/s using “OpenELEC AppleTV Factory Restore” but it still freezes after a few minutes.

I will appreciate any help.

I run Win 7, iTunes etc