New PSU and system not booting it seems...

[doublelayer]

Hi

My system was overheating and causing random shut downs where the system would just turn off, I brought a new power supply but now the computer seems to load up lights n all..... but the screen turns on then goes to the standby orange colour.

I have checked all connections, changed graphics card reset ram, check HD on another comp all seem to be fine.

Does anyone have any suggestions that I could try to resolve my problem?

Thanks for any help.

edit: I must also add I've tried the monitor on another computer and it works fine.

[Webster]

Hi

My system was overheating and causing random shut downs where the system would just turn off, I brought a new power supply but now the computer seems to load up lights n all..... but the screen turns on then goes to the standby orange colour.

I have checked all connections, changed graphics card reset ram, check HD on another comp all seem to be fine.

Does anyone have any suggestions that I could try to resolve my problem?

Thanks for any help.

edit: I must also add I've tried the monitor on another computer and it works fine.

Make sure that connection to the monitor and computer video out are securely connected.

Was the computer on the motherboad video before? if yes, go into BIOS and change the video setting.
If using video card, was it working before PS change? check to see if the card is working on another machine.

To start trouble shoot, disconnect everything except video and RAM (that means unplug HD, DVD/CD drive, any UBS devices, all PCI cards, all external connection except mouse, keyboard, and monitor....) and boot system up to see if it boot.
Did you hear the bootup multiple beeping sound when boot with stripped system? If yes, listen to the sound of the beep and decode the problem with your Motherboad manual for problem for your particular Mobo.

[doublelayer]

Did as advised but on starting the comp I didn't hear any beeps no doubt bad news

[Bjs]

Remove everything, and just try the system board with power connected
Check reset, and power on buttons on case to ensure they are working, not stuck, or damaged in any form (many upgrade and forget about the aging box buttons)

If after all this there is not a single beep
Remove bios battery, remove power, set cmos jumper to clear, and leave it in this state for atleast 6 hours.
Reinsert battery, reset cmos jumper to pre-state, connect power, cross fingers the problem has cleared

If that fails, it would be easier to replace the motherboard than to perform the bios jump start method via reflash using another board with identical bios (for the pro's only)

By the sounds of it, the apic chipset is fried (onboard power management)

[Nelson37]

Was the Pc still semi-functional before the PS replacement, or had it shut down and refused to re-start?

Have you connected the secondary 4-pin connector? Did you get any power-on beeps BEFORE changing the PS? Does the fan on the CPU spin?

Re-connect the old PS and test that. The new one could be bad.

Don't mess with anything else yet, all that does is open up more possibilities. Always test new PS with ONLY mobo connected, that's TWO and ONLY TWO connectors (assuming you are also using the 4-pin auxiliary), that way you have TWO and ONLY TWO things that could go wrong. RAM and video and BIOS and everything else should not be touched, no reason whatsoever to involve these extra issues.

Not long ago I had a customer with a bad PS. Troubleshooting time was dramatically increased by the customer's foolishness, which included removing the video card and improperly re-inserting it, screwing down the sound card which was completely out of its slot, and somewhow managing to jam one of the RAM chips in backwards. Took some time to reverse all these errors, far longer than actually diagnosing and replacing the bad PS. If he had told me up front he had opened the box and messed with it, would have been much faster. All he said was that it had been moved.

ONE thing at a time. All you needed to touch was the PS, now all the other items that have been changed are suspect, as well.

[aedipuss]

i'd start at the beginning. turn off the power supply. unplug everything except the motherboard/video card/floppy drive. remove all other cards. make sure the power connectors are all firmly seated including the video card's external power connector if it has one. turn on the power supply. do the lights on the keyboard flash on? push the computer on button. any beeps? anything displayed?