Black screen with loud buzzing

Oct 11, 2018
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Hello,

I recently purchased an Alienware 13r3 refurbished from Dell outlet. After receiving it and playing a few games, I decided to undervolt the CPU to lower temps. I settled on -100 and everything seemed fine a d I dropped CPU and GPU temps 7-8 degrees Celsius. A few days ago, I pushed the undervolt to -120 and did a short (10 min.) stress test in XTU. It passed and I downloaded some things then shutdown for the night. The next day, I went to play guild wars 2, and about 30-40 minutes in, I got a black screen with a loud buzzing sound. I manually powered the system down and restarted. I clicked into XTU and received a message if I had watchdog enabled, values would be reset to default settings for stability, or something to that affect. I readjusted the value back to -100 and played about an hour with no issue. Was the black screen and buzzing caused by the -120 undervolt? Or should I be concerned about something else? I am within the return period. Love the computer and that's the first time anything like that happened. I am assuming the undervolt caused instability (guild wars 2 is more CPU intensive than gpu). However, I wanted the opinions of others before I assume it was only the undervolt.

My system:

Alienware 13 r3
13.3" Oled display
kaby lake i7 7700hq
Gtx 1060 6gb vram
8 gigs ddr4 ram (hynix)
256 gb pcie nvme sad (Samsung)

Without undervolt:
GPU temp, 88c max, 74c average
CPU temp, 90c max, 76c average

With undervolt:
GPU temp, 80c max, 67c average
CPU temp, 84c max, 69c average

*Temps gaming (guild wars 2) for one hour for comparison. HWINFO64 used to monitor*

Thanks in advance!
 
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