Saturday, August 01, 2015

Upgrade Dell XPS 15 L502X to Windows 10

Yesterday I upgraded my Dell XPS 15 L502X from Windows 7 to Windows 10. The whole process was smooth except a few problems.
Before upgrade, I uninstalled some software I rarely or seldom used.
  • The Dell Stage should be uninstalled; it is not compatible with Windows 10.
  • OneDrive should be uninstalled too.
  • Firewall software should be uninstalled unless it is compatible with Windows 10.
After upgrade, there were a few issues:
  • No sound: download the latest driver from Dell and reinstall.
  • No HDMI audio:download the latest driver from NVIDIA  and install.
  • OneDrive not working: probably you have OneDrive installed before upgrade and haven’t uninstalled it before upgrade. In Windows 10, search OneDrive, uninstall the OneDrive (Desktop app), and unlink the account via OneDrive tray icon.
  • Could not access Internet: the Windows firewall is set to block everything. Change to the default value “Allow” or disable it for now.

Wednesday, July 01, 2015

Folders without names reappear on desktop

Recently two folders without names appeared on my desktop. I can delete them, but they will reappear after a while. Furthermore, when I try to delete them, a window pops up and asks

"Are you sure you want to delete these icons from your desktop? 
To restore it later, go to Control Panel."

 If I open Windows Explorer, go to Desktop, and click on the folder icon without a name, on the bottom left, Windows Explorer displays something like:

This issue may be caused by Office 2013 installation and uninstallation. The following shows the steps to delete these folders completely with the aid of the long names.

  1. Click the Windows Start button, and type in regedit in the search box, then press Enter.
  2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace and expand the NameSpace branch.
  3. Delete the branches of the same names with the ones found in Windows Explorer.
Now the folders should not reappear by themselves.

Tuesday, December 16, 2014

Removed user draining battery in Android 5.0 Lollipop

After you try the guest user mode in Android 5.0 Lollipop and delete it to return your own user profile, you may notice that in the battery usage, there is one item on the top, "Removed user", and the battery usage percentage is increasing.

To solve this problem, the following step may help.
  1. First make sure the use details of the removed user actually do NOT change over time (click on the "Removed user" in the battery status page to see use details). Note that, the battery usage percentage may still be increasing. If the use details change, try to enter into guest mode again, and delete.
  2. When your phone or tablet asks you to recharge, turn off your device, and recharge it.
  3. When the battery is full, turn on your device and the removed user should be gone.