Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Computer doesn't return to sleep mode anymore

02 Apr 2010   #1

windows 7 ultimate
Computer doesn't return to sleep mode anymore


My computer is a new Alienware Aurora running windows 7 64 bit Ultimate version; it also has an internal Hauppauge WinTV HVR 2250 TV tuner installed.

I've occasionally used the built-in Windows Media Center to record TV programs, this was how my computer used to behave:
1. I set time for TV recording,
2. I put computer into sleep mode,
3. My computer woke up at the appropriate time,
4. did the recording,
5. put itself back to sleep afterwards.

It's been a while since I did the last recording, I just found out recently that my computer now behaves differently: it only does step 1 to 4, it doesn't put itself back to sleep anymore. I came home a few time to find the computer was still on long after having recorded the shows, when it should've been in the sleep mode.

I'm scratching my head over this sudden change of behavior. I didn't change any power settings at all. The only hardware change has been the 850w PSU, when the last PSU failed and had to be replaced under warranty service.


My System SpecsSystem Spec

02 Apr 2010   #2

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, clean install, upgrade disc


Since the causes can be many, read this fine tutorial and see if it helps.

Power Options and Sleep Mode Problems - Vista Forums
Works equally well with 7.
My System SpecsSystem Spec
03 Apr 2010   #3

windows 7 ultimate

Thank you for the reply.

I read the thread you posted, unfortunately didn't find anything relevent to my particular program.

Perhaps I can rephrase my question from a different angle. When my last 850w PSU failed, Dell/Alienware sent out a technician and replaced it with another 850w PSU, though I can't be totally certain the replacement is 100% identical. I wonder if it is possible at all, as far as you're aware, that having a slightly different PSU could cause a computer to fail to return to sleep mode properly.

My System SpecsSystem Spec


 Computer doesn't return to sleep mode anymore

Thread Tools

Similar help and support threads for2: Computer doesn't return to sleep mode anymore
Thread Forum
Solved my pc doesn't sleep anymore. Performance & Maintenance
Solved BSOD on return from sleep mode BSOD Help and Support
Computer won't return back to sleep after waking for recording Media Center
Mouse and Keyboard locked up after return from sleep mode Hardware & Devices
x64 Ultimate - Can't Return from Sleep mode Performance & Maintenance
Computer don't return from sleep mode Performance & Maintenance
Sleep doesn't sleep anymore - just goes to login screen General Discussion

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 03:36 AM.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33