Replaced PSU, Computer turns on Long Enough for Fans to Spin, then Shuts Off, And Repeat...

squidbiscuit

Commendable
Jul 2, 2016
1
0
1,510
Oh boy, I think I might lose my mind!

A month ago my 8 year old computer kindly let me know it was dying when the cursor would freak out and start shape-shifting, the screen would flash to green or purple with yellow pinstripes, which if I was lucky would happen 2-3 times before shutting off. Sprinkle in a few blue screens of death, and message received (btw I don't know what the error code was anymore). I noticed that this especially happened when playing a video game or using Blender.

Original Build: MSI H55M-E33, Intel Core i3 3.2GHz, Radeon HD 5670, Antec Earthwatts 650w, & 4 x 4GB Corsair Vengeance DDR3.

To my thinking it was either the GPU, PSU, or CPU that was failing in particular.

I bought a GeForce GTX 950 Zotac and replaced the old GPU, and the computer seemed to improve in that it wasn't showing all the symptoms described above, but it wasn't using the new GPU either. My system didn't seem to recognize that it was there, yet I had the monitor plugged directly into it, and the fans were spinning. So at this point I'm worrying the motherboard might be an issue.

I decided to just replace the PSU with a Corsair CX 750w, as well as the fan, but before that I did a deep clean of everything, keeping my anti-static wristband on during. I find that the CPU chip looks to have a little residue as though a bit of the fan had melted onto it or maybe vice versa. After installing the PSU I turn the PC on and it manages to power all the fans and the fan light for about 1/2 a second before shutting down. After about 5 seconds they turn back on again and on and on the cycle goes.

It feels like I've trapped myself in a vacuum, and while I have been trying to go off the advice from other threads on this forum, I'm at a point where I need some direction that is specific to my situation from someone a lot more knowledgeable than I.
 
Solution
Hi squidbiscuit :) and yes it may be a difficult trouble shoot as your description indicates.

Where you describe quote: " I find that the CPU chip looks to have a little residue as though a bit of the fan had melted onto it or maybe vice versa." Could you please take a photo as clear as you can of what you describe. Could this be excessive TIM material squeezing out the side of the CPU thermal transfer plate.?

Also if you had the monitor connected directly to the GPU and the monitor was receiving a signal then that rules out your monitor and GPU as being faulty. Where does it say or make you think the GPU was not being recognized?

When you start the system, observe the Qcodes or beeps during post and report where it stops or what...
Hi squidbiscuit :) and yes it may be a difficult trouble shoot as your description indicates.

Where you describe quote: " I find that the CPU chip looks to have a little residue as though a bit of the fan had melted onto it or maybe vice versa." Could you please take a photo as clear as you can of what you describe. Could this be excessive TIM material squeezing out the side of the CPU thermal transfer plate.?

Also if you had the monitor connected directly to the GPU and the monitor was receiving a signal then that rules out your monitor and GPU as being faulty. Where does it say or make you think the GPU was not being recognized?

When you start the system, observe the Qcodes or beeps during post and report where it stops or what the beeps were, then reboots.

If you have any Mini dump files from the BSOD, then they can be analyzed.

Try to clear your CMOS and see if that helps.

To identify the culprit you may have to benchtest the system outside the case, as it could be a number of things including the CPU thermal, DIMMs or MB CPU socket pins. however lets do the easy things first.

 
Solution