The easiest way to do this is by using a Driver update tool but you could also search for and download the drivers yourself.Test your battery now and if there is still a problem charging, then it may have just reached the end of its’ days and it is time to part company!
Make sure all work is saved as you will run the battery down until the system shuts off.
When this happens you should plug in the power cable but DO NOT turn back on the laptop.
Wait until you are confident the battery is back to a full charge again and then turn on your laptop.
Tried Windows Update Diagnostic.diagcab which says"Problems installing recent updates" - not fixed. There are folk that will scream "something" about this but hey, it fixed it and I got updates going again.2. Last resort is clean Win 7 instal from 6yr old OEM recovery disc and try updating from scratch and avoid any cleaning software except windows disc cleaning utility.
"Service Registration is missing or corrupt" - fixed Let me share a few fixes I used.1. What I'm after is fully updated Win 7 for image backup with minimum software installed.