it keeps on shutting down especially when I'm playing games. Another thing, when i punch letter A on my keyboard, it shows like this "€A" there's this thing --> € .. Do you think that the problem is on my keyboard ?? I tried to reformat the PC 'cause I thought it's just a virus but it became severe .. sometimes it shuts down approximately every 30minutes .. Help me pls ..
That's a start, but you still didn't list your hardware (CPU, GPU, PSU,...). From what little info you gave, it may be a heat problem. If you open the side cover on the case and play with the cover off, does it last longer before it shuts down?
I don't know about your keyboard, but that's a seperate issue.