I updated my windows 8 last night to 8.1 .. my PC became very slow .. it's takes for ever to boot up and to shut down .. every
By today (2-17-14) you've probably already solved your problem but thought I'd throw my two cents in
if it's worth anything....
1-what kind of machine do you have?
2-what's the cpu speed?
3-how much Ram do you have installed?
4-what size Hard Drive do you have?
As trite as it sounds, the four do make a difference.
Let me or us know what you come up with and good luck.