# HL2 problem

**URL:** <https://forum.kirupa.com/t/hl2-problem/74503>\
**Category:** random\
**Created:** [December 29, 2004, 8:52pm UTC](https://forum.kirupa.com/t/hl2-problem/74503 "2004-12-29T20:52:12Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![prit](https://avatars.discourse-cdn.com/v4/letter/p/f14d63/32.png) [@prit](https://forum.kirupa.com/u/prit)\
**Post date:** [December 29, 2004, 8:52pm UTC](https://forum.kirupa.com/t/hl2-problem/74503/1 "2004-12-29T20:52:12Z")

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I got Half-Life 2 for Christmas, and its being stupid. Now, I know that it needs Steam, and I’ve had it on my PC for a while, but hadn’t updated it for the past few months. When I install HL2, it brings me to steam, and I go to “Games” and it just says “Purchase HL2” or something. So when I click on “REgister a game I already have”, and input the CD key, it says invalid. In my package, the 5 cds were in five different paper holding things. Disc one’s case had the CD key. Th elast part said, and I quote, “…80 HALFLIFE 2” with the 80 being the last set of numbers. How exactly do I input the CD key? Anyone else have trouble, too?