My friends Pavillion g6-2293sa is continually restarting the desktop. It is an Intel i5-3210M with 6Gb ram. Problem appears to have started about the same time as upgrading from Windows 8 to Windows 8.1 in April.
So far I have done the following:
1. Run HP Diagnostics from the F2 - all hardware components passed
2. Started in Safe Mode with networking and this is stable
3. Did a System restore back to the oldest available which was April 21 - problem still exists
4. Installed SafeMSI to allow me to update applications in Safe Mode
5. Updated Google Chrome which was not working (Firefox & IE were fine)
6. Removed Classic View & Norton360 in case this was causing the problem
7. During restarts Windows has applied various (unknown) updates but not 8.1.1 yet.
The laptop starts ok (seems slow to me for an i5) HP logo displays and Windows starts but then when the desktop loads with the taskbar and icons this continually reloads.
Would appreciate help to diagnose/resolve the issue short of doing a restore to factory settings and losing all the installed applications and user data.