What are symptoms of a dead CPU?

LouisIsMyDOG

Honorable
Dec 16, 2013
44
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10,530
I was installing my new Seidon 120V to lower cpu temps. If I had known the hassles that came with it in advance, I would have never bought it. Any way, I kept loosing contact between the two surfaces (cpu and heatsink). So I kept applying thermal and then taking it back off if I lost contact to avoid air gaps, using isopropyl alcohol. I probably, realistically did this step 10 times before I got the heatsink on the cpu. Not to mention, I was so excited when I got my new heatsink, I did not follow the directions properly, so therefore used the wrong screws on the back panel (plate that goes behind mobo) so the male screws were too short and would not reach the female screws on top of the mobo which led me to loosing contact between the two surfaces several times. Now, during the whole process, I started getting angry and kept applying more force until I finally got the mobo on my lap (I did not care about static at this point) and then finally realized it was the wrong screws. When I had finally finished installing the Seidon 120V, my computer would just turn on the fans but not send a signal to the monitor and so in turn I had no bios. Then finally there was also a loose screw in the back of the motherboard which I think "shorted" the mobo because it slighted tapped the motherboard while the fans were running and then just everything shut off, even the fans. From that point on nothing came online. At this point, I thought it was either my mobo or cpu that was dead. I automically assumed it was my mobo becuase of the "short" and I had no subsitute pieces to test out my hypothesis. The odds were in the favor of the mobo because the cpu is typically the most durable. Now my new mobo won't give the monitor an input signal as well so I've concluded that it is most likely my cpu that is dead. I am right?
 

Dolan100

Honorable
Aug 22, 2013
47
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10,540
No, sadly I managed to bend the pins on my very first CPU and first I thought its was display problems with my GPU but it turned out the CPU was in fact broke beyond repair so I didn't even get a flash screen.
 

LouisIsMyDOG

Honorable
Dec 16, 2013
44
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10,530
1 x GIGABYTE GA-F2A88XM-HD3 FM2+ / FM2 AMD A88X (Bolton D4) HDMI SATA 6Gb/s USB 3.0 Micro ATX AMD Motherboard
$74.99

1 x AMD A10 6790K 4.0GHz Socket FM2 100W Desktop Processor AD679KWOHLBOX
$129.99
 

DPMadGames

Reputable
Oct 30, 2015
6
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4,510
It does not go into BIOS, it does not display anything onscreen, fans and optical drive will run, the mouse lights will turn on but the keyboard lights will flash and then turn off. That's what happened to me
I was rushing to build my computer without my dad and then I accidentally bent the pins so much that one pin was touching another and I turned the PC on without knowing at that time that I owe my dad 50£ for a CPU replacement as I want the same one