after effects will not preview video

[idkw17348735]

after effects will not preview video AT ALL. i can't even drag the placeholder. images, however, are just fine. this is weird because it worked just fine earlier TODAY

[Szalam · Accepted solution]

Reboot your computer.

Other than that, we are going to need a lot more information from you in order to give you any sort of useful suggestions.

[idkw17348735]

ok, what other info do you need?

[OussK]

maybe, screenshot, PC spec, AE release, OS....