When attempt to switch on PC completely dead [no it is not the fuse in the plug}.
Fuse in the plug?
Sounds like a good design...........
[Since I do not know, is this an indication that the power cord's plug, on the surge protector side; has a fuse in it? ]
So what is the method to check a fuse?
Is it the preferred method to eyeball it?
No
A multimeter set to OHM's, should be used to check it. (1K)
"It looks like the fuse element is going across okay"
Not always true. May be present, but not actually be touching one of the ends, and fool you.
Going with the premise that you KNOW;
A) The fuse to be good
B) The power cord TO Power Supply is good.
C) THE receptacle in the surge protector, that you have the power cord plugged into; is good.
Reasoning on the last statement?
I have had Many surge protectors, where just THAT receptacle was bad.
"Hmmm, power LED light is on, so surge protector is on,
router has power, monitor has power, and so does the printer.
Let me plug a table lamp into THAT receptacle, the computer is plugged into........"
Nope! NADA!
Power is KNOWN to be getting TO Power Supply?
Okay. Suggest a simple test now.
This test determines if the problem is the Power Supply; Or the Power On switch.......
The test is to use a jumper wire, on the ATX main power cable's connector.
Do Not know which one the Medion has.
It is either a 20-pin ATX main power cable, or a 24-pin ATX main power cable,
http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20
[NOTE* Color of connectors does NOT matter ]
http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24
Whichever one your Power Supply has, look for the GREEN wire.
The Green wire is the Soft Power On wire. (Abbreviated as PS_ON)
The Green wire is Temporarily jumped to ANY Black wire.
ALL Black wires are Ground wires.
The preferred jumper wire is a straightened out paperclip, bent into a U-shape.
Turn the U-shape over.
The top of the U is wrapped a few times with black plastic electrical tape. (Color doesn't matter. It's just that Black is more common)
This taped area is for your fingers, and thumb to hold onto.
The 'Legs' coming down, are what is used.
Power Supply plugged into power, and 20 or 24-pin ATX main power cable; plugged into motherboard.
The BACK of the ATX main power cable's connector, is where the wires go in.
It is the Back of the ATX main power cable's connector, where the U-shaped jumper wire is to be used.
One leg slides down into a socket hole, that has the Green wire in it.
Slides RIGHT NEXT TO the green insulation of the wire, and down into the socket hole.
MUST slide down into the socket hole far enough, that the U-shaped jumper wire touches a female metal terminal; that is on the end of the Green wire.
This is an example of what the female metal terminal connector, looks like,
http://www.mcmelectronics.com/product/28-9420&utm_medium=Affiliate&ref=cj&utm_campaign=CommissionJunction&utm_source=CommissionJunction?utm_expid=8634549-14
Looking back at the Playtool link, look at the middle photo.
There you see the ATX main power cable, unplugged from the motherboard, and you see a FRONT view of the connector.
Here you can make out the open end, of the metal terminal connectors mentioned above.
The jumper wire must touch the Back of this connector.
(Jumper wire has to go Approximately 3/8ths of an inch, down into the socket hole.
.375 inches)
Moving on........
The other leg of the U-shaped jumper wire, goes down into ANY socket hole with a Black wire in it.
ALL Black wires are Ground wires. (Negative)
[This is a DC circuit. There is a Positive, and a Negative.
ALL power wires are Positive wires. ALL Black wires are negative wires. { Ground ]
The Soft Power On circuit uses 5 Volts DC.
In comparison two D cell flashlight batteries produce 3 Volts DC.
NOT stating there may be a small spark!
It's just the way electricity works.
For this reason you may wish to wear a glove, on the jumper wire hand.
The contact period made is no more than 2 seconds.
The Power On switch is a Momentary Contact Switch.
IF, the Power Supply turns on you have a bad Power On switch.
IF, the Power Supply does NOT turn on, you have a bad Power Supply.
The Power Supply in your computer is a Converter.
It converts HIGH AC voltage down to 3 LOW DC voltages;
3.3 Volts DC
5 Volts DC
12 Volts DC
EACH one is a Voltage Power Rail.
Orange wires are 3.3 Volt wires
Red wires are 5 Volts
Yellow wires are 12 Volts
(ALL Black wires are Ground/Negative wires)
EVERY wire that is Orange, is a 3.3 Volt (DC) wire.
ALL Orange wires go back TO the Power Supply.
They all connect TO the 3.3 Volt power rail, in the Power Supply.
EVERY wire that is Red, is a 5 Volt wire.
ALL Red wires connect to the 5 Volt power rail, in the Power Supply.
The same can be said for All Yellow wires.
ALL Yellow wires are 12 Volt wires.
ALL Yellow 12 Volt wires connect to the 12 Volt power rail, in the Power Supply.
IF, just one voltage power rail is weak, the computer will NOT work.
A) If ALL of the LED's were on at once, they would use less than 1 Watt of power.
B) EACH fan uses 2 to 3 Watts of power.
C) A typical Processor (CPU) can use 51 to 130 Watts of power.
Just depends on what CPU (Processor) it is.
[LED = Light Emitting Diode. It is redundant to refer to it as an LED light. That is saying it is a Light Emitting Diode light ]
That is why you may see LED's light, and maybe fans spin, but no computer working.
NOT enough power to turn the Processor (CPU) on...........
[Just in case you get this far, and this happens]
http://www.directron.com/atxswitch.html
The above ATX power on switch, is used in a LOT of desktop computers.
The Power On button is an assembly. it has the Power On switch, inside it.
For additional questions please post in a Comment.
Or click on Reply at end of solution.
Regards,
joecoolvette
SOURCE: medion md8824 mainboard layout
I have checked the specs and there is no Floppy port on the board.. What you do is to buy an external drive similar to what these notebooks are using... visit a computer store to find out... Don;t worry, It's free to ask.
Happy Fixya
SOURCE: How do I switch on my wireless switch on my Medion PC (desktop)
it is in your control panel under wireless.
SOURCE: how to restore factory settings
well hello there if there is a boot cd that u made of came with youre sytem its usally called utils or somtime like that.
this will boot youre system into a recovery mode and utilty where you can recovey of youre system via youre recovery partition marked RECOVER and follow on screen guide with a bit of luck youre system should recover back to factory
SOURCE: medion computer (6 years old, running XP) keeps switching itself off. Why?
Could be one of three things, or a combination
1) Computer is dirty inside. Cooling system is clogged with 'Gunk'.
('Gunk' = Dirt, dust, hair, food crumbs, dead bugs, etc)
A Processor will turn off if it becomes too Hot. (BIOS turns it off)
It's a fail safe feature that is built in. Keeps the Processor from burning up.
(No Processor operating, No computer)
Computer on a table, computer unplugged from power, all cables unplugged to the computer. Computer case open, follow Anti-Static Precautions.
[ Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out (Short Circuit) the delicate hardware components inside a computer.
Computer on a table, computer unplugged from power, computer case open. TOUCH an unpainted surface, of the metal frame of the open computer case.
This action will relieve your body of Static.
Should you leave your computer in the middle of working on it. be SURE to Touch the metal frame again, upon your return ]
Use a can, or two, of compressed air for computers. Attach the plastic straw provided, and break the plastic lock tab off of the top of the can. (Nozzle)
Spray air as a professional paint sprayer would. When you start, squeeze the trigger in all the way, then let go when you reach the other side. Keep the can level when spraying, if possible.
Start at the top inside corner of the computer. Spray air across to the other side. Then drop down a space, and spray air across again.
Keep going down in rows.
When you reach the bottom of the computer case, tilt the top of the computer case towards you, and spray the bottom of the case out.
Try to clean out the inside of the Power Supply's case, as best as you can. It won't be perfect, but any cleaning will help.
On the inside of the computer case, go up to the metal case of the Power Supply.
There are vented holes in the case. The straw is inserted partway into a hole, then air is sprayed.
Hold onto the straw with one hand, and the can of air with the other hand. If not the straw may pop off inside the case of the Power Supply.
Start at a top ventilation hole. Then go to other top holes beside it.
Now go to the bottom ventilation holes.
Finally go to the back of the computer, and Power Supply. Spray the fan blades off, the center hub of the fan, and the surrounding cage. (Shroud)
Go back to the inside of the computer, and dust off one more time across the bottom of the case.
Also at this time it would be good to clean the gold plated contact pins, on the bottom of the 512MB ram memory module.
The contact pins 'corrode' over time, and this makes a bad contact.
http://en.wikipedia.org/wiki/File:Generic_DDR_Memory_%28Xytram%29.jpg
Handle the ram memory module by the Body.
The Body is the rest of the ram memory module, except for the gold plated contact pins.
The Body is coated with a see-through protective plastic.
Use a pencil eraser to clean the contact pins. If using an eraser on the end of a pencil, and not a solid eraser, refrain from letting the metal band contact the contact pins.
Rub up, and down on each contact pin.
(There are 184 contact pins. 92 on each side. IF, this is a DDR Sdram ram memory module, and IF my sources are correct about what type of ram memory your Medion uses. I DO wish I had the MSN though)
It may not look as though you are doing very much, as the contact pins may not become bright, and shiny.
It's okay. Doesn't take much 'corrosion' to make a bad contact surface.
The cleaning you are performing will help tremendously.
When finished cleaning use air to remove the eraser dust. You can use air form a can of compressed air for computers, or air pressure from your mouth will be sufficient.
2) Bad Power Supply
Weak voltage power rail. Electrolytic Capacitors are breaking down inside the Power Supply.
An Electrolytic Capacitor can operate at a weakened state, for quite a while, until it eventually fails.
Primer:
A) IF all of the LED lights were on at once, they would use less than 1 Watt of power.
B) EACH fan uses 2 to 3 Watts of power.
C) A typical Processor can use from 51 to 125 Watts of power. Just depends on what Processor it is. (Older processors use less)
Power to turn the Processor on, but not enough to keep it on.
3) Motherboard:
Specifically the Electrolytic Capacitors on the motherboard.
Allow me to use a previous solution for information on this,
http://www.fixya.com/support/t11187430-machine_will_not_boot_up_shuts_down
Awaiting your reply as to what your diagnoses finds. Post back in a Comment.
Regards,
joecoolvette
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