Ytdyklly

old computer that am intending to use as a test server.

• PC had windows XP installed


• PC is rarely used.


• PC started to freeze randomly.


• i started cleaning every bit, and getting every fan to work (considering heating issue).


• after am finished cleaning process; attempted to install windows 7.


• after the first restart during windows setup, on "Completing installation" step. computer froze.


• Second windows 7 installation attempt worked fine, and PC worked fine since then(5 months being occasionally used for an hour or 2).


• 3 days ago, 2nd of January. i purchased 3 additional ram modules to install.


• PC started to freeze randomly again.


• Reinstalled Windows 7. Several attempts failed at Completing Installation step.


• removed the 3 newly installed ram modules.


• Reinstall Windows 7. Several attempts failed at Completing Installation step once again.


• Kept switching between ram modules one at a time, until an attempt succeeded(can fairly say ram modules have nothing to do).


• Now Windows 7 64 bit installed. randomly freezes in normal mode, perfectly fine in safe mode with networking or Diagnostic startup
  

random freeze definition: on login screen prior to entering windows login password(idle state). after logging in(in idle state). while checking stuff around, device manager, event viewer, installing software, after 5 seconds of booting to the windows login screen, after 25 mins of heavy cpu load.

while i need help in general; and to comply to rules, i have this specific question:
If i concluded it's either a driver(windows default driver) or a windows service issue, and am currently on Diagnostic startup and willing to start enabling a service after service, and driver after driver.

There are plenty of services and some depend on other. Can someone suggest order that i can follow?

Al hamdulellah.

• Disabling Power service, stabilized the windows. However it
  disables Audio service.


• the absolute reason of my issue was Processor power management* being less than 100%.

Now windows is running on Normal startup. All drivers and services are running; i just modified Balanced, and Power saver plans Processor power management value to 100%. High performance plan has it set by default.

Now the remaining issue, is what to do during windows installation at Completing installation phase!

On a side note though, this is not an answer for my specific question :D
and this post requires proper tags. but i'll sleep for couple days first.

*screenshot taken from laptop. not the desktop in question.