Start-up problem

For the past 2 days when I start my computer either nothing will happen or it briefly starts then stops. After a while I can get it running. Once it is up and running, I have no problems.

I have received 4 possibilities:

#1-Power supply

#2-Defective motherboard capacitors

#3-Defective motherboard start circuitry

#4-Dying Bios Battery

Anything else? Most likely?

 

I suspect PSU also, can you try another one in your system, maybe a friends?

Please remove all unnecessary components from your pc, like the video card, sound cards, USB devices exepct mouse/keyB. Then try and boot. If you succeed, then put the items back in one by one, and see which one causes the instability.

Report back what you find and i will help you some more.

 

I suspect the PSU also. All fans are working and temperatures are fine. A heat problem will not occur at start-up. Right now it is still on and working fine, I will not shut it off until I have a PSU to try.

 

A dying or dead CMOS battery can be noted by the lose of system date and time (also the mobo LEDs pre boot).

MOBO issues are tricky but sometimes you can note "swollen" capacitors visually.

Can you look in the Hardware Monitoring section of the BIOS and take note of the CPU Temp and the Fan RPMs.

I concur with many above that a dying PSU will behave intermittently and can display the symptoms your experiencing.

I would suggest it is time to remove the side cover (lay it flat is best) and then boot the system and have a good look. Also consider reseating PSU connectors to the mobo, RAM and other devices, looking for "shorts" while your at it.

 

The system day/date is fine and the MOBO LED is also fine.

I had rebooted successfully this morning and checked the fan speed (Check that all fans are operating and temperature. My computer has a visual temperature readout and the temperatures are fine.

Could a dying battery cause the PSU to cut out after 2-3 seconds?

I will check all connections.

Thanx

 

The battery is purely for saving the BIOS settings and should have no influence on the PSU.

It seems you have either a dying PSU or a "short" (naked wire touching the case).

 

Nope.

Looks like you PSU as BE said, is either dying or is dead.