Windows 7 does not recognize the optical drive? Microsoft appeared to help you solve

Source: Internet
Author: User
Tags command line

Over time, Windows 7 bugs are starting to surface. A few days ago, after installing Windows 7, the optical drive could not be used, and the optical drive was completely normal before the installation.

Microsoft said it was aware of the problem and offered a temporary solution. Microsoft says the problem is primarily related to the firmware of some optical drives and the adaptive Link Power Management (ALPM) feature in Windows 7.

Currently, Microsoft has confirmed that the following several models of DVD optical drive in the affected column:

* Sony bc-5100s DVD

* Sony bc-5600s DVD

* Tsst ts-l633b DVD+/-RW

Microsoft said that the three models of users can contact the corresponding vendor to obtain the corresponding firmware update.

The second workaround is to disable the ALPM feature in Windows 7. This feature is primarily used to turn a hardware device into sleep after 100 milliseconds of idle time, and is part of the Corona management program in Windows7. However, disabling this feature does not affect the high performance, balanced, and power saving scenarios built into the system. Three.

Disabling this feature needs to be addressed by the command line, and Microsoft says it must enter the command in the following order:

powercfg.exe -setacvalueindex 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c 0012ee47-9041-4b5d-9b77-535fba8b1442 DAB60367-53FE-4fbc-825E-521D069D2456 0
powercfg.exe -setdcvalueindex 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c 0012ee47-9041-4b5d-9b77-535fba8b1442 DAB60367-53FE-4fbc-825E-521D069D2456 0
powercfg.exe -setacvalueindex 381b4222-f694-41f0-9685-ff5bb260df2e 0012ee47-9041-4b5d-9b77-535fba8b1442 DAB60367-53FE-4fbc-825E-521D069D2456 0
powercfg.exe -setdcvalueindex 381b4222-f694-41f0-9685-ff5bb260df2e 0012ee47-9041-4b5d-9b77-535fba8b1442 DAB60367-53FE-4fbc-825E-521D069D2456 0
powercfg.exe -setacvalueindex a1841308-3541-4fab-bc81-f71556f20b4a 0012ee47-9041-4b5d-9b77-535fba8b1442 DAB60367-53FE-4fbc-825E-521D069D2456 0
powercfg.exe -setdcvalueindex a1841308-3541-4fab-bc81-f71556f20b4a 0012ee47-9041-4b5d-9b77-535fba8b1442 DAB60367-53FE-4fbc-825E-521D069D2456 0

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.