Monitor doesn't display anything after CPU spikes to 99 degrees C.

pqndachan

Commendable
Mar 24, 2016
7
0
1,510
So my monitor won't display anything even though it's on and connected, well... it displays the little "ASUS" animation is normally does when it powers on and then afterwards it just shows a black screen but it stays on. This happened after my CPU spiked to 99c and caused my computer to shut down. I left the computer to cool down for around 10-15 and then booted it back up, it booted but like I said before the screen wouldn't display anything.

This has happened once before but when it did I had a new case coming anyway so I just transferred the parts over and is worked for some reason. I don't really know what's happened so if anyone could help me that would be really great!

I don't know if this will be useful or not but the CPU is an AMD FX-8350 Black Edition being cooled by the stock cooler and the monitor is a 27" Asus monitor that I can't remember the model number of. I still have warranty on the monitor but I'm not sure about the CPU in case I need to get new ones.

Please help me... ;-;

If you would like to know anything else that could help you help me then please ask and I'll see if there's any useful information that I can give you.

Here's an image although I doubt it will help, the monitor is on and so is the computer but there is nothing displaying.
http://prnt.sc/ajgsae
ajgsae


UPDATE:
The monitor is now displaying, I used some of my dust cleaner to get behind the CPU cooler since the CPU was hot and the spray was cold. The temperature sensor on my motherboard now says "AA" and I'm not mis-reading it, it 100% says "AA" I don't know what this is either though. I think I'm going to need to get a new cooler but I don't really know yet. I'll have to see what happens in the next few days unless you guys think that getting a new cooler will be beneficial.
 
Solution
You have good components. Monitor the CPU with AOD and if the thermal margins are less than 10°C at full load, then the CPU cooler isn't good enough. The VRM on that motherboard shouldn't cause throttling.
AA is a hexadecimal code. AMD motherboards and chips use algorithms to calculates temperature from settings, rather than using thermistors or thermocouples.

As mentioned above use AMD's Overdrive and we need to know if your motherboard's power delivery is good enough to run that chip in intense gaming situations. (very few are)
 

pqndachan

Commendable
Mar 24, 2016
7
0
1,510


My motherboard shows my CPU temperature... or at least I think it does... it's an Asus Crosshair Formula-Z. The powersupply is a 750W Corsair one, the cooler is stock and the graphics card is a GTX 770.

 

pqndachan

Commendable
Mar 24, 2016
7
0
1,510


I've had this PC for a good 1-2 years now and it's only just started to happen, my motherboard is an Asus Crosshair Formula-Z and I wasn't gaming at the time. My PC so far is fine but I have kept this up for a solution in case it happens again.

 
Excellent. You have a great motherboard, so we know the problem is elsewhere. What does AMD Overdrive show your thermal margin to be?

It's also very helpful to know that the system has worked well for a considerable time in the past and that this is a new problem.
 

pqndachan

Commendable
Mar 24, 2016
7
0
1,510


The Thermal Margin is around 35-45°C, that should be fine, shouldn't it?

 

pqndachan

Commendable
Mar 24, 2016
7
0
1,510


Errrrrrr... no, I don't know what Prime95 is though... I just downloaded AOD and checked the thermal margin.

 

pqndachan

Commendable
Mar 24, 2016
7
0
1,510


Ok, I downloaded Prime95 and my thermal margins were at 9-12 so does that mean I need a new cooler?

 

pqndachan

Commendable
Mar 24, 2016
7
0
1,510


I'll probably just get a new cooler to be safe and I don't really like the noise since I'm at my computer almost 24/7.
Thanks for your help though! :D