Choose Your Product
No Product SelectedSelect Product
High pitched noise on battery power - ThinkPad T60, T60p, T61 and T61p

Customers who are using a custom Windows XP image (not the Lenovo factory preload) may hear a high pitched buzzing noise coming from the front left corner of the Thinkpad when running on battery power.

Affected configurations

The following ThinkPad Systems running Microsoft Windows XP may be affected by this symptom:

  • ThinkPad T60, T60p
  • ThinkPad T61, T61p


  • For T60 / T60p: Make sure you are at BIOS version 79ETE2WW (2.22) or later; Power Manager Version 1.43 or later; Power Management driver 1.50 or later.
  • For T61 / T61p: Make sure you are at BIOS version 7LETB9WW (2.20-1.08) or later ; Power Manager Version 1.43 or later; Power Management driver 1.50 or later.
  1. In Device Manager, under "Universal Serial Bus controllers", you should see several "USB Root Hub" items listed.
  2. Under the "Power Management" tab, you should see a check box for "Allow the computer to turn off this device to save power."
  3. If the check mark has been removed from the box, you will need to add it back (so if not checked, check it).
  4. You will need to do this for each and every one of the "USB Root Hubs" listed Some are USB 2.0 hubs (which actually should not affect this issue) and some are USB 1.1 hubs (which will affect the issue). We suggest putting a check mark in all of them (this is the way we ship the preload).
  5. See figure below

    usb hub

Note: If the above does not help, you may also disable CPU Power Management in the system BIOS. Under Config --:> Power --> CPU Power Management --> change to "Disable". Save and exit.

If you are unable to find what you are looking for, please do try the following options:
1. Lenovo Assisted Search
2. Product usage and general troubleshooting tips
3. Lenovo Support Forum
4. Technical Support Call Centre

Country Availability
Document ID : HT001728
Legacy Document ID : MIGR-70669
Last Updated :
Copyright © Lenovo 2013, all rights reserved
Was this page helpful to you?YesNo

Select Task
Drivers & Software  
Guides & Manuals  
Diagnose & Fix  
Warranty & Services  

Support Help Index
Technical Specifications - PSREF
Driver Matrix
Newly Released Drivers (RSS)
KnowledgeBase Featured Articles
Community KnowledgeBase
Community Forums
Lenovo EMC
Windows 8 Support