I am posting here because my Windows 10 PC is taking anywhere from 30 minutes to more than an hour to POST (one single beep). After it POSTs it sometimes reboots immediately before reaching the POST screen, other times it goes into Windows and after some 20 minutes, it goes into a BSOD, which never completes gathering the errors information (reaches 20%) and then it automatically reboots, restarting the process all over again. I will now include my system information:
CPU: 2700K i7
Motherboard: Gigabyte GA-Z68x-UD4-B3 (Rev 1.0)
Videocard: Gigabyte GTX 960 OC Windforce (4GB version)
Hard Drive: Toshiba 250 GB SSD (Dont remember model Number)
RAM: 4 x 4 GB G. Skill Ripjaws 2300
Power Supply: Diablotek 650 Watt
I am now going to list what I have tried:
Removed everything except the Power Supply and MOBO: Took a very long time to get a beep / other times it got a beep rather quickly.
Added all possible combinations of 1, 2, 3 or 4 RAM sticks: Same as above
Added CPU: Same as above, got video output from motherboard HDMI port, reboots then takes long time to POST again.
Added SSD: Same as above, got BSOD, reboots and same as above.
Added videocard: Same as above.
When I finally got to Windows, I logged on, Search function/Cortana does not work. Can't get error files/etc because it causes a BSOD (not sure if related). Windows update to 1709 update is pending from last time I actually got a boot and was able to get into Windows 10 for more than a couple hours a month ago.I can't get update completed because the restart fails and doesn't complete the Windows 10 update, it's right there waiting for a reboot when it does actually turn on again.
Sometimes I get no POST at all and end up giving up on it for a few days and keep the PC turned off until I can muster the energy to try to troubleshoot again.
This is my only real PC, I do have a small Windows 10 "Nextbook" tablet that can barely run Youtube videos and is useless for any real work I used to do from my PC.
These problems have persisted for more than a couple months now, and it all started after a couple of blackouts where I live caused by the power grid being damaged and being repaired after hurricane Maria. I do use surge protectors, but I am not totally confident in them protecting my stuff completely. To note, these blackouts are never announced, they just "happen" with no warning, so can't reliably keep computer turned off when they occur as I wish I could.
Thanks for any assistance/advice you might have.