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Solved Computer turning on issues after new PSU

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Alavar

PCHF Member
Feb 21, 2023
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#1
Hello, i'm new to this forum. 2 days ago from this post, i changed my pc psu to fit with a new gpu that i installed. The GPU was already isntalled before that and didnt have any problems with it. However, after plugging the new PSU the computer wouldnt start, no lights on the power button and no fans spinning. So i checked the new PSU alone and it worked fine (fans spinning and etc..). But when connected to the motherboard, it doesnt do anything.
After searching the net, i found that maybe resetting the bios will do, so i used the cmos jumper on the motherboard and it booted up just after ( lights on the power button when i press it and everything working fine). However:
- My computer will shut down abruptly wihtin 3 to 5 hours without me doing anything about it.
- After this or without turning it on after some time, everything goes back to step 1 and i can't turn it on without using the cmos jumper on my mobo again.

I tried swithcing back to the old psu but nothing will do, same issue that happened with the new one : so making the switch with the new psu probably did something but i don't know what. I'd be really glad to have some help!

For the computers specs:
- CPU :i5-7400
- GPU : gtx 1650
- Mobo : G11CD-K rev 1.
- Ram : Crucial 2*16gb Ram
- Old PSU : pca022-za6g 360W ; New PSU: ATX 500 W Technoware
 
#2
If you remove the graphics card and use the onboard graphics
Do you get the same result?

Can you Download and run and then post. https://www.ccleaner.com/speccy/download
To publish a Speccy profile to the Web:​

In Speccy, click File, and then click Publish Snapshot.​

In the Publish Snapshot dialog box, click Yes to enable Speccy to proceed.

Speccy publishes the profile and displays a second Publish Snapshot dialog box. You can open the URL in your default browser, copy it to the clipboard, or close the dialog box.

The last part of each URL is randomized, so only people you provide with the URL will be able to find your profile.

The information given in Speccy cannot be used by anyone to hack your system

Could you also include the power supply specs E.g Cooler Master 850W Gold V2 NOT E.g 850w
 
#4
Coincidence? I don't know BUT you do not have enough space on your C drive to run Windows.
Absolute minimum is 32GB Free you have 36gB. (8%)
To eliminate this as an issue you need to free up space on your C: drive.
I know it seems odd but let's eliminate this as a possibility.
 
#5
Sorry for the late response, I tried everything written above and :

The power button didn't seem to be an issue, the pc wont start at all.
BIOS is being reset each time I use the cmos jumper method to launch the pc, I still updated it and set it to defaults, but hasn't changed the situation.
I also as suggested cleared some space on the ssd up to 200 gigabytes free now but doesn't help the pc turning
on.
Also, one thing to note is that I did change the cmos battery, but the pc is not booting up when using the cmos battery to reset the bios but is when using the cmos jumper.
 
#6
the problem is the PSU is not capable to output what the system needs to run properly.

As you can see it can only output 336 watts and the display card requires 350 watts.

Screenshot 2023-02-22 130215.png
 
#7
After trying some changes and thinking about it, I noticed that i forgot to put back the jumper cap on the motherboard when resetting the bios ( i was using a screwdriver) : Turns out that this was causing the computer all the issues that i had. So what happened probably is that after changing my psu, i just had to reset the bios once via CMOS, but because i forgot to put the jumper cap back, it was causing some issues. It seems to be resolved for now.
Thanks for the help,really appreciate it, i'll try looking for a more powerful psu, didnt know the new one was not enough.
Thanks.
 
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