first of all, this is my first question on this site or anywhere for that mater, so excuse any mistakes or the lack of info I might provide, I'll try my best:).
I have recently installed a program on my windows 10 from some torrent, I was stupid enough not to have checked if the uploader was trustworthy, but tho program worked fine. I have a dualboot, windows 10 and Ubuntu 18.04 LTS, each OS installed on a separate HDD. After restarting the computer the Ubuntu won't start and just would get stuck on boot, displaying a bunch of lines .
after restarting once again into Windows, it would boot fine, however some windows fonts disappeared. here is an example of one of the effects of the program. i would post other images, but right now the problem is gone, even though it was still here when I turned on the PC. I am unable to see any fonts in settings and most of windows programs, and i tried everything. I did a clean install of windows twice, but the problem persisted. i then installed a winfilefolder.exe, which fixed the problem, but it hen reappeared after two days. I also updated graphic card drivers, which also fixed the issue, but not for long. no antivirus I downloaded was able to detect any threats (bit defender, ESET, malwarebytes), not even in the safe mode. windows works fine in safe mode.
this affects Ubuntu, as it gets stuck on boot most of the times, but when it does boot, it freezes after 15 minutes of use. I tried bootfix, which didn't work, I have two bootable DVDs one with ubuntu 17.10 and the other with 18.04 LTS. when I boot 17.10, it works fine, but the 18.04 only shows black screen if I opt for either installing ubuntu (which would enable me to reinstall) or just the live option. i can boot normally into ubuntu if I go into recovery mode and choose continue to boot option, but the performance is reduced, and some apps as well as some functions don't work (as some drivers don't load is my guess). If I take the HDD with Ubuntu to another PC and load it there it works just fine.
Each time I run ubuntu it gives me the following error:
radeon 0000:03:00.0: couldn't schedule ib
My last option is to create a bootable DVD of windows 10 and another for DBAN, wipe the disk, update Bios and install Windows 10 again.
so is it possible that the program somehow infected my Bios, or is it just limited to my windows 10 HDD, and I should just completely wipe it and reinstall windows 10?