I just bought this Windows 7 64x bit 4 months ago.
And few weeks ago this computer still working fine until i went for a holiday leaving this computer in my house.
When i'm back, it takes so long to log in my computer account and after about 10 secs logged on to the computer, it freezes and it says "Entering power safe mode"
Ok.. since your problem isn't present in Safe Mode, then this is most likely a process that is being loaded during the boot process that is causing you problems... open msconfig/startup from the search bar, and choose "disable all" and reboot .... If your problem doesn't reappear, then you may begin to enable your processes one by one until you find the offending process... Let us know how it goes...
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
LENOVO K450 @3.0GHZ
OS
64-bit Windows 8.1 Pro
CPU
Core(TM) i5 CPU 4330 Haswell @ 3.20GHz
Motherboard
LENOVO
Memory
12.00 GB
Graphics Card(s)
Intel(R) HD Graphics
Sound Card
Intel HD integtrated
Monitor(s) Displays
HP 25' ISP Monitor
Screen Resolution
1900/1020
Hard Drives
(1) ST1000DM003-1CH162 (2) Generic STORAGE DEVICE USB Device (3) Generic STORAGE DEVICE USB Device