Windows Update then PC problems

Hi guys, last night my computer installed one of those Windows updates, and after restart (windows looked a bit different) I opened my FS for a short flight just as soon as I landed my FS went to a black screen and the CTD. I thought no big deal , and restarted my computer. Now everything looks normal. Open my FS9, start flying and bam my computer goes to a black screen and the engine sound is kind of stuck, can't do ctrl-alt-delete, can't do a thing. Have to turn off my computer by pressing the power button. Turn it back on, looks ok.
What I did this morning was left it running an antivirus scan and also ran spybot just in case.
OH Forgot to mention, on the first restart after the install just as it finished loading my desktop it popped an error about a system32/ xxx dll (don't remember the name).
Thanks in advance for any help you can give me.
Dan
What I did this morning was left it running an antivirus scan and also ran spybot just in case.
OH Forgot to mention, on the first restart after the install just as it finished loading my desktop it popped an error about a system32/ xxx dll (don't remember the name).
Thanks in advance for any help you can give me.
Dan