Desktop wont boot but has power

[Brother-Captain_Diom]

Hi guys, wondering if you can help on this one it really stumped me:

Last night my desktop PC suddenly turned off during use and now wont turn off again, I have had the system as is for about 5 years and haven’t had a notable problem like this since a RAM stick died about 3 years ago.

Specs:
Intel i5-2700 CPU
Class B Canada ices-003 Motherboard (cant recall the make/model without taking it out)
Nvidia 1050ti MSI GPU
16GB Ram in 4 sticks (Again unknown make/model)
120 GB Drevo X1 Sata 3 SSD
500 GB HDD
1 TB HDD
Unknown 24-pin 230V PSU (possibly 500W)

The PC has power, I have tried different cables in different outlets, the Motherboard standby light and Ethernet connection lights are on, however when pressing the power button the HDDs, SSD, Internal Case Lights, and Fans do not move/ turn on.

Since the PC does not even attempt to boot I am fairly certain it is not a CPU/GPU/HDD/SSD problem, however it is confusing that the Motherboard still registers power.

I am reacquiring my screwdriver tomorrow so can I take out the PSU and preform a paperclip test and will update with results.

I have a spare laptop to use in the meantime, but since I mainly use my desktop for my University work I need it back up and running asap.

Any and all advice would be welcome

[phillpower2]

Welcome to PCHF,

Unknown 24-pin 230V PSU (possibly 500W)

This suggests that the PSU is not of good quality, you would know the exact details if it were.

Only two suggestions for you at this time, see if you are able to borrow a decent PSU to swap in for testing purposes or get your PC tested by a local tech

As a PSU puts out various voltages +3.3V, +5V and +12V it may appear that the PSU is working correctly but it is not, any significant drop of any output can prevent the system from booting up, the other scenario is a significant increase in the output which can be worse as it can fry one or more major components such as the MB, CPU, RAM, add on video card etc.

[Brother-Captain_Diom]

Welcome to PCHF,

This suggests that the PSU is not of good quality, you would know the exact details if it were.

Only two suggestions for you at this time, see if you are able to borrow a decent PSU to swap in for testing purposes or get your PC tested by a local tech

As a PSU puts out various voltages +3.3V, +5V and +12V it may appear that the PSU is working correctly but it is not, any significant drop of any output can prevent the system from booting up, the other scenario is a significant increase in the output which can be worse as it can fry one or more major components such as the MB, CPU, RAM, add on video card etc.

Thanks for the suggestions, I do have a suspicion that it is the PSU operating understrength

The PSU is definitely the oldest part of the build and relatively cheap so I was looking to replace it anyway soon

I’ll be able to post the exact make and specs of the PSU when my screwdriver arrives, as due to its orientation the sticker is covered by the case at the moment

[phillpower2]

You are welcome but I wouldn`t worry about getting the PSU info to us but concentrate on trying to get a known good PSU to swap in instead, that is the only way you can rule the present PSU in or out as the cause.

NB: Your CPU has integrated graphics so you can remove the add on video card from the PCI-E slot on the MB and use the appropriate video port on your MB instead.

[phillpower2]

Any update for us or should we mark your thread.

[Brother-Captain_Diom]

Any update for us or should we mark your thread.

Apologies,

The PSU was dead after preforming the paperclip test
Bought and installed a new EVGA PSU and everything works perfectly

Thanks for the help!

[phillpower2]

No problem and thanks for getting back to us to confirm that that the previous PSU was the cause of the issue (y)