WHAT IS WRONG WITH MY ADOBE!!

just had online prelim, and my question paper was in pdf format, but there was this popup that said "this file is damaged and beyond repair."

WTF!!

reinstalled adobe but still couldnt work. then after reinstalling, my laptop became so slow and i couldn't login to the student portal. restarted, tried downloading the exam paper again, but same old problem.

then switched on my sis's laptop and i could finally view the darned pdf file. but since her battery was low and i didnt know where she left her adaptor, i had to quickly type the questions into my words document then switch it off.

the best thing was, all this happened while my exam time was still running! so effectively i had wasted 45 minutes. ARGH.

and if my sis finds out i used her laptop, i'm pretty much screwed. HAHA.

anybody has any idea how to fix that adobe mess? this has happened quite a few times already. excuse me while i go makan and watch tv, i've had enough typing for one day.