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Computer turns on but doesn't display anything?


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#1 mariopoke68

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Posted 06 September 2017 - 07:57 AM

Just to give you a preface, this occurred when I was trying reapply thermal paste on my processor. So after I reapplied the thermal paste and put the processor and heat sink back in, I got a blue screen something about UEFI unable to find a file upon rebooting. I don't know why this happened but I believe the computer was on sleep mode when I was reapplying the thermal paste. 

Anyway it also gave me an option to go to my BIOS settings if I pressed ESC, to which I did. As I was looking through the settings in BIOS, it suddenly froze and I was unable to move my mouse cursor. Puzzled, I turned off my computer and now it wasn't displaying anything on the screen anymore when I turned it on again. My mouse and keyboard lights weren't turning on, however my Blue Yeti microphone still had the red mute button light on. All the fans are still functional. 

At first I thought it was the processor that went bad, but I tried changing it to another processor and still the same result. So I'm guessing maybe it has to be either the motherboard, or power supply, unless both processors somehow got fried? I tried unplugging everything and holding the power button for 30 seconds, and resetting CMOS, - nothing is working. 

I don't know, this all seems so sudden especially since I was just trying to reapply thermal paste. Maybe it was a bad idea that I took out the CPU in sleep mode or something. Do you guys have any idea? Thanks in advance.


Edited by mariopoke68, 06 September 2017 - 08:00 AM.


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#2 hamluis

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Posted 06 September 2017 - 08:14 AM

 I don't know why this happened but I believe the computer was on sleep mode when I was reapplying the thermal paste.

 

 Maybe it was a bad idea that I took out the CPU in sleep mode or something. Do you guys have any idea? Thanks in advance.

 

Let's see if I understand correctly...you did not power down the system when applying thermal paste and removing system components?

 

Louis



#3 mariopoke68

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Posted 06 September 2017 - 08:21 AM

Yes, I had it in sleep mode and rebooted it from there - sorry for the confusion(unless sleep mode counts as powering down). But before this happened it was already hanging randomly in normal use, so the chances of it being the processor is very slim.


Edited by hamluis, 06 September 2017 - 02:25 PM.
Removed unnecessary quotebox - Hamluis.


#4 mightywiz

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Posted 08 September 2017 - 12:46 PM

If power was still on and computer was in sleep mode and you removed the processor then you probably fried something whether it being a processor or motherboard or something else.

was it in sleep mode when you swapped to a different processor?

 

you should always physically remove power cord from the pc before doing any parts removal.

 

sleep mode is not an off state!  you still have standbye voltages being supplied to components.



#5 The-Toolman

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Posted 08 September 2017 - 03:24 PM

When you switched to a different processor did you make certain the different processor would work with that motherboard and be detected by that motherboard bios. :scratchhead:

 

When you put the processor back into the processor socket did you make certain to align the arrow on the processor with the arrow on the processor socket. :scratchhead:

 

You never mentioned what type of processor you have and I have seen Intel processors inserted backwards in spite of how the processor was keyed.


Edited by The-Toolman, 08 September 2017 - 03:47 PM.

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#6 mariopoke68

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Posted 09 September 2017 - 11:34 AM

When you switched to a different processor did you make certain the different processor would work with that motherboard and be detected by that motherboard bios. :scratchhead:

 

When you put the processor back into the processor socket did you make certain to align the arrow on the processor with the arrow on the processor socket. :scratchhead:

 

You never mentioned what type of processor you have and I have seen Intel processors inserted backwards in spite of how the processor was keyed.

My current one is the Intel Xeon e3 1231 v3 and the other processor is the Intel Pentium G3258. They are compatible with my MSI Z97 PC Mate motherboard as they are both LGA1150. 

As far as I'm concerned, it seems like the problem is with the motherboard - since changing the PSU with a new one yielded the same results. I appreciate your advice though.






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