PC does not power up - PSU OK

[DeonH]

Hi all and thank you for your help.

Our children's PC has died. My one son was busy importing his new CD into iTunes when it just died. I immediately thought the PSU is gone. I had a spare one and replaced it. No luck - it still doesn't start up. I then did the "paper clip" test on the replaced PSU and it works 100%.

Can it be that the motherboard has packed up? In other words, can a broken motherboard cause a PC not to start at all?

Thank you so long.
Deon

 

[sajunky]

Not neccessary mobo. Disconnect all components CD_ROM, hard drive (power and interface cable), keyboard (PS2 especially), except monitor and display card (if present). Remove power cord and remove memory DIMMs. Reconnect, if hear beeps, then faulty memory. It is how you can find out faulty componnent.

 

[DeonH]

Thank you very much.
I have done all of that and the mother board was the problem.

I have bought a new one with CPU and DDR3 RAM.
And now windows 7 does not want to start and also cannot do a repair. Any things I can do before formatting? Fortunately I will be able to access the HDD with my PC and save the data. I just don't want to waste a lot of time formatting if there is something else I can try.

Regards,

 

[sajunky]

You need win7 specific help. On XP you could boot from installation CD and use repair. It would reinstall Windows preserving user configuration. New drivers, new CPU with different number of HT/cores, it is why it is needed. Can you boot in safe mode?

 

[DeonH]

Ok, understand now. No, could not boot in safe mode. Had to format and now busy re-installing Windows.

Thank you for helping.

 

[sajunky]

What is old mobo/CPU? I am always interested in repair/reusing components.
To everybody: sajunky dropbox is in Knoppieslaaghte near Diepsloot.

 

[DeonH]

What is old mobo/CPU? I am always interested in repair/reusing components.
To everybody: sajunky dropbox is in Knoppieslaaghte near Diepsloot.

Hi there.
Unfortunately everything already on the dumps.

 

[sajunky]

Hi there.
Unfortunately everything already on the dumps.

OK

 

[CataclysmZA]

I have bought a new one with CPU and DDR3 RAM.
And now windows 7 does not want to start and also cannot do a repair. Any things I can do before formatting? Fortunately I will be able to access the HDD with my PC and save the data. I just don't want to waste a lot of time formatting if there is something else I can try.

When you move from one board to another, the only way you can usually boot up straight away with a replacement is to buy the same or similar board with the same chipset and socket. Moving from one board to another, like from LGA775 to LGA1155, will result in Windows refusing to boot. In this case, backing up everything and reformatting is your only option.