Help! Steam won't finish decrypting files

[Will Piovano]

Steam has decrypted 33% of the HL2 files, but won't budge after that. I've left it going for hours, but it still doesn't move.

This really sucks. I bought the game a week ago and still haven't even launched it.

Help!

Will

 

[NikolaX]

try to restart steam.
or restart system.

 

[The Monkey]

Try to start HL2 anyway.