OS: Windows 10 (not activated)
CPU: i5-4670K 3.4GHz
Ram: 4x4GB Avexir core DDR3 PC3-17000C11 2133MHz
Motherboard: Asus Z87-K
PSU: Tagan bz series 800w
SSD: SanDisk extreme pro 240GB SATA 3.0 SSD
I'm not super tech savy so apologies if I'm missing something.
I've had this computer for about 3 years, bought second hand from a friend who built it himself. I have replaced the RAM myself, re pasted the CPU and installed a heat sink about 2 1/2 years ago. My computer was running fine up until 6 months ago when it started occasionally blue screening. This happened more and more frequently until it was unbearable so I had someone I know look at it. He seemed to not be interested in doing much with it unfortunately so I eventually I got it back off him, after he replaced the HDD and removed the GPU, suspecting one or both were broke. He's not sure I expect because he didn't take the time to actually test each component. It's been running ok the last week with the onboard graphics and this borrowed SSD so I assumed everything was fine.
My new GPU arrived today (a Zotac geforce 1060 6GB) so I installed it and turned it on. It started booting up for a second and then turned off. Without me doing anything, 2 seconds later it turned on and did the same thing. I quickly turn it off and take out the GPU, fearing I had installed it incorrectly. I doubled checked all the cables are sealed tight, made sure no screws were rolling around, blew out dust etc. I turn the computer back on and it does the same thing with no GPU in it. After about 4 restarts, it successfully boots. I've turned it off/on again multiple times to test it and it does the same thing every time, stay on for .5-3 seconds, turn off and try again. The times it does not start, I dont get the beep my computer (I guess my mobo?) gives everytime it starts. When it gets there the 4/5th time, I get the beep and it boots. FWIW, I've never installed a GPU with a PSU cable, but I cant imagine I did anything wrong. I connected the free 6 pin PCI-E cable into the top of the GPU, as the videos I watched instructed.
When it was blue screening months ago, I ran every test I could on it (mem check, HDD check, temp check and more that I cant remember) but save a few corrupted sectors in the HDD which is no longer in it, there was nothing showing up in the tests.
As far as I can see, this may be the old problem or a new one. The PSU is quite old and this started happening after the GPU was connected to the PSU so maybe that's the issue, though as I said, I'm not particularly knowledgeable on this. What type of tests should I do? Is there something simple that may be the answer?
Any help you can offer would be greatly appreciated. This is stressing me out!
Edited by Gruaiggorm, 15 September 2017 - 05:25 PM.