Blue screen can be a tricky one, but if you have not seen it, Microsoft has a page about it here

http://windows.microsoft.com/en-US/w...s-in-Windows-7

They blame it on serious problems that cause windows to shut down unexpected, but we call those updated, when the update forces a restart sometimes it can't close property.

And another page here with some settings you can try

http://answers.microsoft.com/en-us/w...b-68b599b31bf5

For the print spooler issue, that's also pretty common and in many cases can be solved by updating your printer driver to the latest driver. HP Deskjets for example had some real issues until they updated their driver. The update for whatever reason does not recognize the old driver and won't start the spooler on a restart, but sometimes after you start it once it sees it can work with it and will come up on it's own.