hi well i got a new rig this mornin for me parents heres the hardware: amd64 3000+ (s754) Abit NV8 nForce4 4X motherboard XFX GeForce 6800 GS Extreme XXX Edition 256MB GDDR3 VIVO TV-Out/Dual DVI 1 gig corsair value select ram 80gig maxtor hdd Tagan TG430-U15 430W ATX2.01 Easycon SLi Compliant Modular Silent PSU 1 dvd r/w 1 cdr r/w problem is when i put this all together and plugged it in as soon as i switched the power on by the socket not the case, it started up, then when it was due to beep at the bios it switched itself off without making any beeps! then when i tried the power button nothing happend, ive tried unplugging everything then switching the power back on but it does the same thing does anyone have any ideas??
Pop the hood and take a whiff, is/was anything burning? it sounds like your PSU is NOT happy... if it can still be called a power "supply". pull the PSU and short the green and any black wires on the MOBO cable and see if it starts up (fan spinns etc...). if it does your in luck. I'd start from there
Check all connections (especially the 4-pin ATX12V connector if the board has one) and reseat them. This could be anything at this stage... got any spare graphics cards or RAM to swap out?
nonono this is good. it could have been ALOT worse, pull everything except the MOBO, proc, and ram. then boot and see what happens EDIT: that includes the video card so the more correct term would be to "listen to what happens"
thats what i did and it just done the same thing - switched on at wall, started without me pressing power, shutdown before any beeps
ahh ok then back in 5 *edit* dam been told by me parents to leave it till tommorow, ive been building it since 3pm what i like to be careful lol anyhoo if anyone has any ideas then please post ill be back tommorow thanks in advance Lucy
Well, if the PSU powers on (with nothing plugged into it) when you switch the mains on, then there's a problem with it. If not, try another PSU if and see if the same thing happens
if the PSU starts as soon as you plug it in (without motherboard) then it has issues. if it doesnt then thers no reason it shouldn't work fine. you might check your motherboard and make sure you have only as many standoffs as you need. its possible that there is one sitting on the back poking the PCB or otherwise shorting it to the case. otherwise the only thing I can think of is the board. just boot with the PSU, the proc and the motherboard and see if you have the same problem. if you do then you have RMA paperwork to file.
Poor contact with CPU and heatsink? Graphics card not inserted properly? Missing graphics power connector or a motherboard power connector? Something's wrongly inserted into your modular PSU? Try 1 stick of ram, different slots. Reset the cmos (pull out the power plug, then reset, then plug it back in, then turn it on) Take it all out the case, stick it on your desk and fire it up on there.
If I may enter my 2 cents as it were... have you tried disconnecting the power button, if it is wired incorrectly or borked so its normally closed rather then open the pc will boot when power is supplied then shut itself off and refuse to start. Dark.
right i couldnt use my old power supply on the new board because its only 20pin so i used the new power supply on the old mobo and it worked fine, so im thinking its the motherboard
sorry bindi i only read things that are of interest to me anyway ive given up, gunna call a professional tommorow and get it sorted thanks to everyone for your help
Do a bit of testing before you pay someone, you can't hurt it... Try it without the RAM, see if you get beeps, try it without CPU, see if you get beeps. If not then its most likely the motherboard.
When things like this happen I take everything out and run the mobo on a (non-conductive) tray, out of the case, to eliminate stand-offs as a prob. Try power it up with only cpu (and hsf), ram, and keyboard and mouse. See if it does the bleep pattern for no graphics card. If it does't, it's stuffed. If it does, pop the graphics in and keep trying it and adding one part at a time until you hit a prob.
It's quite a common problem with Tagan PSUs: it happen to me (dead on arrival) and I found other people had had the same problem searching on google. Just RMA the PSU. ch424
