I have exactly the same problem! It's really annoying because it broke through no fault of my own; i'm 15 and I cannot afford to buy another expensive phone! It's really annoying! Did you ever find the solution?
Also, I cannot take it back because I bought it from Ebay.

 

Warranty is 24 months.

New poster, you say its exactly same problem but possibly not. Please describe precisely what happened before, during and after

 

Basically, I left my house one day with the phone working perfectly normal, when it froze and I took the battery out. After that I can turn it on, it will vibrate and the 02 screen will appear but will load no further and no matter how many times I hard reset, clear storage or fast boot it will keep doing exactly the same thing and not load..
I took it to a phone shop and they said to try and update the software, but I have no clue about how I can do this if my phone won't actually turn on?

 

You can download the 2.3.3 RUU from htcdev.com Labelled "Upgrade".

HTCdev - HTC Kernel Source Code and Binaries

Its an .exe you run from a PC

All you need to get to is fastboot screen (back+power) from off. Then connect USB and run ruu.

 

Sorry, I cannot see anything which says 'upgrade'. Ad the link you sent me doesnt work, it says the site is currently under maintenance.

 

Woo! It's fine, just downloading now. Fingers crosssed.

 

I downloaded it and it turned out to be a (.rar). So I couldnt do anything with it so I changed the file type to (.exe), and now it won't run. Dont know what to do now. Oh no.

 

Rar is a bit like a zip. Within the rar is an exe. If you haven't got winrar installed on your pc (shame on you) then download it now