Random Shutdown, sometimes reboots, no BSOD or memory dump files

So, I was finally able to run Ubuntu on the computer with the CD, and it still shuts down. Therefore, the problem is definitely not software or driver related. It's looking like the PSU is really the problem.

The PSU I was looking into is on back-order, so I have to wait or look for a different PSU since I want to order from Amazon so I don't have any issue returning it in case PSU is not the real issue.

Any recommendation for other PSUs I could look into?

Linux live dvd/usb's are a life saver. People are too ready to blame Windows. You could run the memory checker but that may go tits up because of the flakey PSU.

Antec, Corsair EVGA used 'em all whatever floats your boat.

http://www.tomshardware.co.uk/power-supply-psu-brands,review-33002.html Knock yourself out ! Sea Sonic seem to get good rep, I've a Corsair 520HX that's a rebadged Sea Sonic.

I decided to wait for the EVGA SuperNOVA 1000 P2 from Amazon. I like the 10 year warranty, and I like its ECO mode button being on the outside, so I can turn it on and off at ease without opening the case.

I should get it by Friday! - I feel like a little kid waiting for his Christmas present :)

Let's hope it cures the bloody thing Computers, who needs 'em? I used to manage years ago with just a pager , especially getting called out at half past three in the morning Great idea, middle of knowhere, it goes off and all it displays is a telephone number. Yeh? now what? no mobile phones in them days..........

Okay, new PSU installed and the issue still happens. However, I now notice a pattern.

It shuts down during booting Windows (right before the Windows 10 logo) shows up. I press the power button, and it boots normally. Now, I am thinking it may be a Software issue, and if I reinstall windows it may be fixed. I am going to observe it for a few days before I do a reformat and do a fresh install.

Could it really be the issue was(is) both software and hardware?

These ones can be a pain in the arse. I'd strip it down to the bare essentials 1 stick of Ram, no peripherals, no hdds.

Reset CMOS load defaults.

Boot it off a Live Linux again. Live Linux USBs are more convenient than CDs.

Download Rufus. https://rufus.akeo.ie/ Make sure the correct flash drive is selected in Rufus and point it at your Linux ISO (Ubuntu is friendly)

The default Rufus settings should suffice and click Start. Boot off it and see how it goes.

Just had a thought leave the case side off and make sure the CPU fan is spinning up every time you start it. Long shot.

Torquemada said:

Just had a thought leave the case side off and make sure the CPU fan is spinning up every time you start it. Long shot.

I had left my case off since I installed the PSU.

I did a disk cleanup, and that seems to solve the issue. I hope that's the last I see this stupid issue.

Aloupha said:

I had left my case off since I installed the PSU.

I did a disk cleanup, and that seems to solve the issue. I hope that's the last I see this stupid issue.

Let's hope so, maybe it got a bit scrambled with all the weird shutdowns its had. Best of luck !