Corwin

Hi all, hope someone could help

few moths ago, i bricked my hx2750 by unsuccessful attempt to upgrade it
i sent it to HP, they fixed it and sent it back. and everything was fine. but...

since then i can't use landscape mode. after switching to landscape, i'm unable to run any software. even opening Programs causes problem. after something not Today screen, ipaq totaly freezes, and only soft reset is way out.

and its not software related problem (i think) because it happens after hardware reset too.

any ideas? please