The mos likely two reasons are: 1. You don't have a good enough video card Or 2. (unlikely) you don't have enough memory.
Minecraft is made to work with ANY computer that uses java.
yes it does
Have you checked the version? (bottom left of minecraft application) It might not work because something may be required on the other computer. Or your computer is probably outdated.
You won't be able to play it until you get a computer that it works on.
I think so!
no you don't there's something wrong with your computer
yes they do there is probable something wrong with your computer or internet connection
sort of because if there by you when your on your computer they can do the work on installing it. Otherwise, no.
Have you tried to download mods? If so, some mods aren't really mods, they're scams and they hack your computer so minecraft and other programs on your computer won't work. If you usually don't shut off your computer every day, then shut it off and try playing Minecraft in-browser again.
Try getting KernelEx, but whar are the specs in your computer? laptop or desktop?
You may need to download the newest version of Java for minecraft to work. Or maybe your computer can not handle it.
Yes, it should work fine under Win7.