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Computers performing bizarrely after

by Kfellows92 / February 2, 2018 5:19 AM PST

My two computers are custom built machines by my partner and have both seem to have been affected by a power surger two months ago. I can't be certain of this but for about three weeks neither computer was used. When I eventually did use them, neither would turn on. I eliminated the usual suspects of faulty power sockets, power cords and power boards. Each computer was in a different room. It was then I realised the mouse connected to my computer (Calling it the White computer). I tested both the White and Black (my partners) computers and each had power to their USB ports.

I googled this, and forgive my terrible memory, but someone said something like the ?Motherboards? had done some kind of fail safe to protect the computers during the surge. One person suggested manually spinning the fan while turnin on the computer. Huzzah! This worked for the black computer, but not the white. The black will usually turn on with this method (never without the fan spin) but to this day the white pc is dead as a dodo.

Black pc runs absolutely perfectly like it did prior to the (assumed) surger except for one annoying detail; frame rate dip. I game frequently at between 65/70 fps. As far as i can tell the pc randomly struggles to uphold this and will drop to an unusable 7fps. It doesnt always go this low but the range is between 7-70. I can't say why. Sometimes its after turning on the computer, sometimes its not, sometimes the computer gets better with time, sometimes it gets worse, sometimes it's stable. Its most notable during gaming, obviously, and tobight i have watched my task managet closely as I gamed. I cant find any correlation between the fps drop and any of the cpu, gpu, memory, network, or disk processes. The cpu and gpu both increased as the games began, but they did not spike. I wil do exact numbers at the end.

I am not very pc language savvy so of you could tailer your responses to a noob that would be awesome. Specs for the black pc below, unable to get the white pc specs but i I believe they are very similar.

Processore; intel(R) core(TM) i5-4460 CPU @ 3.20GBz 3.20 GBz
Installed ram; 4GB
system type; 64-bit operating system, x64-based processor

windows 10
Version 1709
OS build 16299.192

Unsure on the videocard but its less than 2 years old.

Very rough numbers during online Overwatch gameplay;
GC; game closed, nothing else open.
GR; game running playing online and fps is dipping.

CPU gc; ~10%
CPU gr; 70%

Memory gc; 36%
Memory gr; 80%

Disk gc; 0%
Disk gr; 49%

Network gc; 0%
Network gr; 0%

GPU gc; ~25%
GPU gr; 50%

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Clarification Request
I really am curious !
by itsdigger / February 3, 2018 5:52 PM PST

and no pro. but I gotta ask :
Are you saying that to get the Black computer running, you have to spin a fan every time you start it up ?

All Answers

Collapse -
Several Possible Suspects
by gaucherre / February 3, 2018 5:34 PM PST

Is the computer plugged into an Uninterruptible Power Supply (known as a UPS)? It's a box that supplies power to the pc for a few seconds when there's a power outage. If the power surge was big it may have made the UPS behave erratically. Disconnect the pc from the UPS and plug it directly into an A/C wall socket instead.
The power surge may have damaged either the pc's power supply (the part where the power cord attaches to the pc), or the motherboard (main circuit board that everything connects to inside the case), or the graphics card (GPU). One other possibility is that one or more of the fans in the pc is damaged, inhibiting airflow in the case and causing overheating which, in turn, causes one or more components to slow down.
Other than the UPS thing mentioned above, it's unlikely that you can diagnose and fix or replace internal parts without some technical experience of building or repairing computers. In that case, take it to a computer repair store if there's one you trust!

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