With my RV511 it is a hardware issue. Specifically where the power plug goes into the laptop. Check this connection. Twist it, see if the charging light comes on. Faulty connection at this juncture.
THIS IS THE SOLUTION AND IT WILL TAKE 90 SECONDS TO FIX
Power management software in Windows Vista
Understanding battery charging issues
If
the notebook battery is not charging or the notebook does not indicate
that the battery is charging, the most likely scenario is that the
battery itself is operating correctly, but its power management software
may have become corrupt. In order to correct the problem, you will need
to uninstall and reinstall the power management software by using the
Device Manager. This document will explain how to uninstall and
reinstall the ACPI Battery listings in Windows Vista, as well as how to
obtain and install updated BIOS files, if needed to correct other
battery issues.
Uninstalling and reinstalling power management software in Windows Vista
In order to correct problems with the battery's power management software, follow the steps below.
1. Click Start and type device in the search field, then select Device Manager .
2. Expand the Batteries category.
3. Under the Batteries category, right-click the Microsoft ACPI Compliant Control Method Battery listing, and select Uninstall .
WARNING: Do not remove the Microsoft AC Adapter driver or any other ACPI compliant driver.
4. On the Device Manager taskbar, click Scan for hardware changes .
Alternately, select Action > Scan for hardware changes .
Windows
will scan your computer for hardware that doesn't have drivers
installed, and will install the drivers needed to manage your battery's
power. The notebook should now indicate that the battery is charging.
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