advent pc wont boot at all

[gragsy]

hope someone can help...i have a advent pc that has died it  had a 350w power supply i changed it to 550w and still nothing any help would be appreciated

[hot dog]

What's the make and model?

When you say it "died" does that mean there is no indication of power, when you power on the computer?  First try plugging it into another wall outlet.  Next try reseating the power connectors on the motherboard...If you've done those things and there is still no indication of power going to the computer, then most likely you'll need another motherboard...

Hope you didn't spend too much on that new power supply.  It's always good to try to borrow a power supply from another computer/or someone for troubleshooting purposes, whenever possible, before purchasing

[Karnac]

Define "died".......No lights,beeps,video.....?

You may have disturbed another component when you changed the power supply. Reseat all your cards, memory, connections, and make sure heatsink is flush to motherboard and CPU fan is attached....Also check the connections from the front of the PC to the motherboard header.....common to have one of these come loose.

If you do require a new MB, the power supply is a good investment.....if it was a bad supply originally, then it conceivably could have ruined a new motherboard.....It's good practice to change the power supply when installing a new motherboard .

[gragsy]

yes there is no power whatsover im usually quite good at repairs but im baffled its not my pc its a friends it is an advent t9304 nothing has been disturbed it just wouldnt come on one morning...it was running on 350w so i tried my 550w but still nothing

[TheShadow]

"Advent" is NOT the manufacturer of the PC.  
Who made it?  HP, Compaq, eMachine.......WHO?

One thing you can try, if it's playing dead, won't cost you anything,
well, maybe $3.

With all power removed from the system, take out the little CR2032 coin-type battery.
Leave it out for at least 20 to 30 minutes.  If you have a voltmeter handy check the voltage on the battery.  It must be 3.0 vdc to be good.  
If not at least 3.0 vdc, replace it!

Then after the above mentioned time, replace the battery, restore line power and try again to start up the PC.

I've worked on several HP computers that appeared totally DEAD, till I performed the above process.
Then they came back to life, good as new.

A 350w PSU in a desktop computer is usually NOT enough power.  It's especially bad if it's a "Bestec" or "Codegen" PSU.  I'd always opt for a 500w PSU to replace a 350.
The 350 on the PSU case is the momentary startup value, derate that by as much as 30% for the all-day operating value.

Good Luck,
Shadow  

[gragsy]

(theshadow) the only thing it says on the tower is advent t9304....if i take the battery out will that diturb any files hardware etc..

[Karnac]

Could be the power switch on the front of the PC....and of course you've already checked the wall socket and surge protector, right?

http://pcsupport.about.com/od/findbysymptom/ht/nopowertopc.htm

[gragsy]

yes karnac all checked

[patio]

Removing the CMOS battery will not disturb any files on the system...

[gragsy]

ok thanks

[gragsy]

ive tried taking the cmos batt out but still nothing

[Karnac]

This is a  Pentium 4...Are you using an ATX 12 V power supply with the auxiliary 4 pin connector...make sure the 4 pin connector is attached to the motherboard as well as the main connector.

[gragsy]

yes karna it is all connected

[Karnac]

If you think it's the switch, and you have a reset button on the front panel , you can use the reset button for the PW-ON switch by plugging the reset connector plug to the PW-ON connection on the motherboard header. Of course you'll have no reset button on the front of the case....If you are confident in the box give it a try and this will tell if the switch is faulty.
Any sign of corrosion or leaky capacitors.......

Kinda running out of options here, gragsy.......maybe time to think motherboard or escalate this to Patio or Broni.

[gragsy]

i appreciate ur help karnac but there is no reset button on the front...and no corrosion or leaky cappacitors