I have recently upgraded my home PC with new motherboard, CPU and RAM. Since then i have a weird bug that i cant seem to get my head around to fix.

Basically whenever i am in the metro UI start screen, at random times when i left or right click it will hang my system with NO BSOD. My monitors go  to sleep my PC is still on and the fans are still on as well as the LEDS andmy keyboard and mouse but they are frozen.

I cant remote onto it from my logmein account to see what is going on.

I have tried the following:

• change power options to disable sleep timeout
• re installed fresh windows 8 then update to 8.1
• changed my main HDD and re installed windows 8 then updated to 8.1
• installed and updated all of my hardware (mouse, keyboard, motherboard chipset)

It is very random and frustrating as i am an IT engineer and i cannot figure out what is going on. I have estimated that my system at peak load pulls around 590W of power and i have a 750W Modular Gaming PSU.

I also have a NVIDIA GTX 295 Pre watercooled.

I really cannot think what this could be and would really appreciate some guidance/assistance with this. In my opinion I do not think it is to do with my PSU or GPU as it is ONLY doing this in WINDOWS 8.1 METRO Screen and nowhere elese not even the metro screen in windows 8 before I update to 8.1

Many thanks in advance for this.

try to check whether this issue also happen in safe mode or BIOS, if still hang there than high possibility hardware compatibility or HW issue itself

try to remove all 3rd party HW like printer, LAN cable, usb dongle and do power cycle to isolate 3rd party HW compatibility or HW issue

if you suspected this is windows issue, I suggest create 1 partition and installed windows 7 or any others OS to proof that this is not HDD or any other HW related issue

because you already reformat your OS, I suggest try to troubleshoot from the hardware side first (HDD, RAM, connection cable SATA and power etc)

• Edited by britishdhez 4 hours 41 minutes ago