Question about Acer Aspire 1640Z Notebook

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Laptop Mousepad and Keyboard stuttering, slow

Dell Inspiron E1705 laptop
Windows XP Media Center Edition
2 years old
Reinstalled OS two months ago
never experience issue before

I've tried many things to solve this problem, but none have worked:
1. Boot in Diagnostic Mode (no apps, three services)
2. Ran AdAware
3. Ran HiJack This but not sure what to make of the log file it spit
4. Updated driver for mousepad
5. Task manager CPU usage is 1-2%

The issue occurs as soon as the sign-on screen. I've tried typing on the DOS screen as well (keys still lag). The only place the keyboard doesn't stutter is in BIOS mode.

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This may be a battery power monitor issue. Try disabling the "Mircosoft ACPI- Compliant Control Method Battery" device. This is located in Control Panel-->System-->Hardware Tab-->Device Manager-->Batteries. Had similar problem with 2 Acer Aspire series laptops (diff models). 2 and 3 year old. Original batteries (both still hold charges for 1.5 hrs of normal usage). Running WinXP, one with SP2 and other had SP3. Both came in the last month with slow jerky TPAD function and nearly non responsive keyboard access. Checked the usual; virus, spyware, hijacking, driver conflict etc. Cloned drive and factory installed..still same problem with kb & mouse. However an external USB keyboard and mouse functioned normally (no lag). Noticed with Battery removed kb & mouse was normal. Finally found disabling ACPI control battery device resolved this issue while allowing laptop to run on either battery or AC.

Posted on Feb 05, 2009

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