Sometimes it sleeps...and sometimes it doesn't

Hey all,
For some reason my computer's been acting a little wonky when trying to sleep. After a restart, when I put the computer to sleep it'll be fine. It'll just do as it does, go to sleep. After prolonged uptime (maybe a week), when I close the lid it will get halfway there (speakers shut off, USB devices shut off), but then I hear the CD drive whir up and everything illuminates back on (imagine as if I removed a USB drive while it was under sleep...).
The funny thing is, sometimes it will go back to sleep after coming back alive, and sometimes it'll just be...stuck. This isn't how sleep is supposed to work...what can I do? Reset PMU and all that? Or am I doing something wrong? I thought quitting iTunes and closing any programs using files from my (always attached) flash drive would help remedy the problem but it doesn't...

Ry_Mac wrote:
recently when I've been trying to put the iMac to sleep it wakes itself instantly, so if I use the Apple Remote by holding down the play button it'll sleep for a few seconds before waking. I'll use the power button on the back of the Mac, same thing happens, sleeps for a few seconds before waking up, I'll do it on the main toolbar at the top by clicking the apple logo and selecting sleep, same thing. Sometimes it sleeps and doesn't wake but recently it's been taking me a few attempts before it finally sleeps.
try if _*resetting the System Management Controller SMC*_ helps.
Also it could be related or it could have nothing to do with the Mac itself but also recently Airport struggles to stay connected to my home wireless TalkTalk internet modem. For the majority of the time it stays connected but every so often it looses its signal. Now my iMac is upstairs and the modem is downstairs but again, I've been using it like this for months and it's never been an issue before.
you might be suffering from _*wireless interference*_.
perhaps one of your neighbor's (new) wireless networks is interfering with yours. download iStumbler (free) or AirRadar (it has a trial period) and note the channels other networks in your vicinity are broadcasting on. *change the channel(s) of your network as far away as possible from those*.
JGG

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now i am having some issues with my laptop and i have some questions as well..
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Hi srt99,
Thanks for posting and welcome to the Lenovo Community,
Am sorry to hear about the issue that and I’d like to help you with the issue that you’re facing,
And first I’d like to ask you to share with us the operating system version installed on your machine to be able to help you more.
Thanks and Best Regards,
Soha
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