Laptop no longer enters sleep mode

I have an HP DV9000 with Windows 7 Ultimate, which I updated recently with KB980408, KB975496, and KB972696. I figured at first that the reason for not being able to go into sleep mode was due to the updates at first however my laptop i still having issues with sleep mode. I tried editing the sleep mode configuration to allow and deny hybrid sleep as well as disable timers with mixed results. Generally when I attempt sleep mode the laptop screen goes black, the lights on the panel go dark but only for a second and then power back on. When I used the command powercfg -lastwake I got a response of


Wake History Count - 1

Wake History [0]

Wake Source Count - 0

Right before posting this issue my laptop had in fact powered into sleep mode for about 5 minutes and the powered back on so I am confused why the history doesn't show any activity. For the life of the laptop and while having Windows 7 I have not had this issue until this week. Anyone have any suggestions for me to try?




Question Info

Last updated March 15, 2018 Views 895 Applies to:


First try to do a clean boot and check if a program is causing this problem.

Refer this KB article and follow the steps:

Make sure you start the computer in normal startup mode after troubleshooting.

Follow these steps:
1. Click StartCollapse this imageExpand this ima, type msconfig.exe in the Start Search box, and then press ENTER.
Collapse this imageExpand this imaIf you are prompted for an administrator password or for confirmation, type your password, or click Continue.
2. On the General tab, click the Normal Startup option, and then click OK.
3. When you are prompted to restart the computer, click Restart.

Make sure your video card drivers are up to date.

Refer this link for help:

You may also create a new power plan and check if the issue persists.

Refer these links for help:

Afzal-Microsoft Support.
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