Power Pulsing (among other problems)

[Philquad]

yea start basic
1st- really need a spare power supply to test it
2- when you turn it on, can you hit delete on keyboard & enter bios? or does it restart? if it stays on, its probably software problem, if it restarts its psu, motherboard,ram or cpu related
removing some covers on the mb & finding the cmos jumper would really help

ocau = overclockers australia, a real geeky site where 15 yr olds build over budgeted computers then dont want them anymore

[dai]

if it stays on in the bios,then problems come in when going into the system,it would still indicate psu as this is where it hands over to the video card and the power requirement shoots up

[Philquad]

if it stays on in the bios,then problems come in when going into the system,it would still indicate psu as this is where it hands over to the video card and the power requirement shoots up

so your saying the video card doesnt do anything when its only in bios mode?

i wonder how you see anything on the screen in that case

[tristen]

Strange hat nobody mentioned the power supply (PSU).

I agree with that.

Remove the power cable, take the power supply out, remove the cover and check for any bulging electrolytic capacitors on the PSU (power supply) printed circuit board (PCB).

Also look for bulging electrolytic capacitors on the mother board and other boards if any installed.

I have changed many electrolytic capacitors in computer power supplies and also on mother boards in the last few years.

[dai]

so your saying the video card doesnt do anything when its only in bios mode?

i wonder how you see anything on the screen in that case

it uses vga mode does not load the video drivers so only draws basic power

[dai]

i would not recommend someone with little knowledge opening up a psu

as they can still hold a lethal dose of power weeks after being disconnected from the power

[lsemmens]

We're not talking TVs here Dai, Yes the caps can store a charge, but lethal? Might give you a fright, but that's about all.

[dai]

tv's?

PC display hardware works in a "VGA compatible" mode upon boot.