Do a System Restore back to before the update that you think messed up your computer. Do you know what the Update was/is? You can remove it from where they are stored if you know what update is is.
After that or even before it, why not download the Driver and instal it?
Pageful of Info here about the driver problem:
http://search.babylon.com/?q=ATK0100+driver&s=web&as=0&rlz=0&babsrc=HP_ss
http://forums.majorgeeks.com/showthread.php?t=252782
Do a System Restore.
Do you know how to do it
Click 'Start'
Right click 'Computer' and click 'Properties' in the box of choices that opens.
In the next 'System Properties' window click 'System Protection'
In the next window highlight the 'C' Drive and click the 'System Restore' tab
Click Next in the new window that opens
Now choose a point to Restore the computer back too.
Set it in motion and have a cuppa coffee.
When done hopefully problem fixed.
If not download and instal the 'missing driver'
Also I suggest you get this program. Its free and small download.
C Cleaner....use it to clean out the Registry
Download C Cleaner
http://www.filehippo.com/download_cclean…
Install it and run it. In the user interface that opens do these things in this order.
1 Click the Registry icon on the left side of the interface and you get a new window opens
2 Click the 'Scan for issues' tab and let the scan complete
3 Now click the 'Fix selected issues' tab
4 Click the 'No' tab asking if you want to Backup changes to the Registry
5 In next window click the 'Fix all selected issues' tab.. when done with the "fixing"...
6 Click 'Close'
You can repeat the processes from 1 to 6 and see if any more issues are found and 'Fix' them
When done, close C Cleaner and that's it for now.
Use C Cleaner at least once a week. I use it after I uninstall anything because sometimes/often uninstall doesn't remove the debris left behind and that will clutter your Reg with useless CRAP.
Perhaps a scan for Malware wouldn't go astray either. Download and instal MalwareBytes from here:
http://www.filehippo.com/download_malwarebytes_anti_malware/
Its a small download size too. When installed and you open it, UPDATE it first by clicking the Update Tab up the top of interface. When its updated, run it to do a Quick Scan. Let it do its thing and when done any nasties will be quarantined.