Tech Support Forum - View Single Post

**Barry_R** · 09-26-2008, 01:55 PM

It may be that your replacement PSU is actually putting out less power than your old one. When they state the wattage it is sometimes a peak wattage and due to inefficiency of the PSU the actuall wattage is less.

As I read your scenario the original PSU was powering the PC enough to get the video to work at least for a while. If ---- infact the new PSU that you tried is putting out more than the old one then one can asume that it would at the least get the PC to begin a normal boot.

So where does one go from here. I would get a high quality high output PSU. Even if that is not the problem you should never skimp on the PSU. While your waiting for the new PSU you might want to try and clear the CMOS and see if it posts. Check to make sure the CPU is properly seated in the socket and that the Heatsink is properly attached.

Should the new PSU fail to get the PC to boot then yes I would suspect the motherboard.

09-26-2008, 01:55 PM	#9 (permalink)
Barry_R TSF Enthusiast Join Date: Aug 2005 Location: California Posts: 700 OS: Win XP Home, Linux Mint My System	Re: Computer turning on but no signal It may be that your replacement PSU is actually putting out less power than your old one. When they state the wattage it is sometimes a peak wattage and due to inefficiency of the PSU the actuall wattage is less. As I read your scenario the original PSU was powering the PC enough to get the video to work at least for a while. If ---- infact the new PSU that you tried is putting out more than the old one then one can asume that it would at the least get the PC to begin a normal boot. So where does one go from here. I would get a high quality high output PSU. Even if that is not the problem you should never skimp on the PSU. While your waiting for the new PSU you might want to try and clear the CMOS and see if it posts. Check to make sure the CPU is properly seated in the socket and that the Heatsink is properly attached. Should the new PSU fail to get the PC to boot then yes I would suspect the motherboard.