PC Wont start after Windows 10 update

yrogergnikif · Jun 14, 2018

Here is what happened. Last night I upgraded my win7 to win10 and downloaded the latest windows updates, as expected. This morning, however, i noticed that the updates were not installed so i restarted the pc, again as expected. Once it shut down, however, it wont start. It powers up everything powers up but the monitor wont show anything at all. I remember my pc having trouble installing a video driver last night but my drivers were very recent. I dont think its my video card because i let my pc alone for a bit and tried a blind log in to my pc. Nothing, no sound or something indicating something working. I cleaned it properly, but remember that my pc up until this morning was working fine and today was working only for half an hour or something. Whats going on?!

My pc specs:
Cpu: AMD FX 8300
GPU: GTX 750
PSU: 450 W
RAM: 12 GB HYPERX
MB: ASROCK 970 FATAL1TY PERFORMANCE

Again note that this build was working fine for months

CountMike · Jun 14, 2018

There's no way OS update could damage anything HW like that, Considering your problems with GPU drivers it suggests something is wrong with it. Take it out and see if there are some signs of life without it.

yrogergnikif · Jun 14, 2018

Nope. Nothing.

CountMike · Jun 14, 2018

Next thing to consider, PSU, see if you can check it properly or replace with a known good one.

yrogergnikif · Jun 14, 2018

Since it was working until that restart that was done properly, could it really cause damage like that? Also there is no way of testing the psu as i have no spare parts atm. Any advice regarding that is much appreciated

CountMike · Jun 14, 2018

Well, PSUs and most other components mostly die during shutdown or start.
You can check PSU by disconnecting it from MB and other components and connecting Green and a Black wire in 24 pin connector. If it starts then you could check if it has proper voltages in 24pin and other outputs. https://allpinouts.org/pinouts/connectors/power_supply/atx-motherboard-power-24-pin-compaq-hp/
https://allpinouts.org/pinouts/connectors/power_supply/atx-btx-motherboard-power-24-pin-ver-2x/
Specially Purple wire from 24pin. That keeps MB powered all the time and enables MB and PSU start.

yrogergnikif · Jun 14, 2018

Checked and all is ok. All colors have their respected voltage.

yrogergnikif · Jun 14, 2018

I found a probable cause. I use a 2x2 CPU cable instead of a 4x2 that MB requires. What i dont understand is why after all this time and not sooner? Also how can i find out if my CPU is busted?

CountMike · Jun 14, 2018

PSUs use some power over time. The other 4pin connector is for power to PCIe ports.

yrogergnikif · Jun 14, 2018

So, now what? I am not rushing you but i need my pc because i have important data about my univercity final project.

CountMike · Jun 14, 2018

Might have to get one of these https://www.amazon.ca/Link-Depot-4pin-Power-Cable/dp/B00P0BFPQI or another PSU with 8pin connector. Can't see any other option.

yrogergnikif · Jun 14, 2018

I was planning to do so anyway but i still dont get the why now of all times?

CountMike · Jun 14, 2018

Murphy's law !!!

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