Monitor has no signal

Emachines / W3410
March 18, 2009 at 16:42:16
Specs: windows xp, amd athlon 64 2.2gh, 1gb ram
ok, yesterday i came home from work and went
upstairs to turn my computer on. It wouldn't turn on, it
turns out that a fuse blew and i had no power in my
room and my parents room. I go down to the electrical
box and fix the problem, go back upstairs and turn my
computer on. The computer turns on fine but the
monitor just lights up like its turning on but then just
stays black and says no signal. I have tried a number
of things but nothing seems to work. I took the
monitor to my cousins house and it worked fine on his
computer. I have no surge protector, so im thinking
that when the fuse blew it messed up the motherboard
or something idk. i have no idea whats wrong with it.
All the fans are running fine, but there is kind of a long
soft beep noise when i start it.

See More: Monitor has no signal

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March 18, 2009 at 19:45:38
The most likely thing is the power supply is failing.

emachines systems have a reputation of using el-cheapo power supplies in their systems that tend to malfunction and fail a lot more often than average, and when they DO fail, they are a lot more likely than average to damage something else while failing, often the mboard. This is especially likely if the make of the PS is BESTEC.
If you DO have a BESTEC PS I recommend you DO NOT continue using it until it quits completely, because if it dies there's a strong possibility it will damage your mboard.

There was a successful class action suit against emachines in the US not all that long ago regarding problems mostly caused by those el-cheapo power supplies!

Failing power supplies are common and can cause your symptoms.
Check your PS.
They often partially work, fans and hard drives may spin, leds may come on, yet you get no video and the mboard will not boot all the way.
See response 4 in this:

You could try this but it probably won't help.

Unplug the case/power supply.
Power off your monitor.
Open up the case by removing the left panel as seen when you're looking at the front of the case.
Check all the connections of the wiring to make sure they are all the way onto their pins and into their sockets, especially the main connector from the power supply. The wires close to the mboard going into the main connector/socket should be more or less perpendicular to the mboard surface rather than at an angle. Make sure all cards in slots are all the way down in their slots.

See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:

While you're in there, if the cpu fan/heatsink has mung (dust, lint, etc.) on it, clean it off, but DO NOT use a vaccuum cleaner to do that - use canned air, or an air nozzle if you have access to an air compressor, or an artist's brush that can be used in small spaces, etc. If may be difficult to clean the top of the heatsink under the cpu fan - the most likely place to have mung on it - and the bottom side of the cpu fan blades unless you remove the fan. If you have a case fan, clean that too if it needs it.

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March 18, 2009 at 19:46:25
The beeping pattern is the key to your problem.

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March 18, 2009 at 20:11:07
ok and how do i fix the beeping problem? anyway i just bought
a new power supply 550 watt BFG tech 2 months ago along
with a new video card. so i dont think the power supply failed,
but i could be wrong

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Related Solutions

March 18, 2009 at 20:27:38
"ok and how do i fix the beeping problem?"

You still haven't told us what that pattern is. Is a single repeating tone? a repeating "high/low"? Beep-pause-beep-beep, repeat? Like I said, the pattern is the key...each pattern means something different.

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March 18, 2009 at 20:58:14
Its a long soft beep noise, no pauses

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