Since I don’t have much information to go on, I am going to provide you with a few scenarios and hopefully, one of them will be similar to your situation.
What is Sleep Mode?
Sleep mode is that stage of operations when the computer enters an energy-saving mode that shuts down all unnecessary components. It should be easy to exit sleep mode and restart former operations. When this is not the case, troubleshooting strategies must take place.
Computer Entering Sleep Mode: Windows Vista
Unfortunately, as with any new product, a few quirks are going to exist simply because of the abundance of possible combinations of hardware and software components that can be utilized to create someone’s computer set up. I’ve discovered that quite a few Vista users have encountered problems with their computers entering sleep mode while using certain LCD monitors. Since some of them have subsequently used these very same monitors on a different computer with a different operating system with no problems, the conclusion to be made is that the problem exists within the Vista operating system.
If this scenario is similar to yours, you have three options open. First, you can replace the monitor with a different one. Second, you can load a different operating system onto your computer. Third, you can visit Vista forums and read through the material offered on how to troubleshoot Vista sleep mode problems here: Sleep Mode Problems.
Computer Entering Sleep Mode: Updates
I have also come across a few posts stating that a recurring problem with the computer falling into sleep mode occurs after installing certain operating system updates. Some individuals recommend uninstalling those updates that will allow you to do so to see if that corrects the problem.
Computer Entering Sleep Mode: Interference from other Devices
It is possible that unresolved issues with one or more of your computer’s peripherals or hardware are creating this problem. Use the device manager to check the status of each of your devices. Correct any errors that you find. To learn how to do so, read the article from Microsoft at: How to Use Device Manager.
Computer Entering Sleep Mode: System Restore
Another strategy that you can try is to use the “System Restore” for your computer system. To do so, follow these steps:
- Start
- All Programs
- Accessories
- System Tools
- System Restore
- Select “Restore my computer to an earlier time,” and click on next.
- Follow the prompts.
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