"My monitor lost signal and mouse and keyboard lost signal as well."
That would be because the computer isn't working.
No Signal on the monitor means it isn't receiving a video signal.
At first diagnoses one would check the monitor cable to see if it is good. Due to your added statement that the mouse, and keyboard have no signal, it definitely means the computer isn't working.
(The monitor cable would be removed, and installed on a known to be working computer, and monitor to test it)
You may see LED lights light, and perhaps fans spin, but the Processor isn't turning on.
Not enough power, or the computer is dirty inside.
(Or a combination of both; Read on)
The hardware components inside the computer are cooled by air.
{ Hardware component examples such as the Processor, Ram Memory, motherboard, graphics card, (IF installed), etc.}
This support page on HP Support, shows how to open the computer case ,of an HP pavilion p6653w desktop computer,
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01684297&tmp_task=useCategory&cc=us&dlc=en&lang=en&lc=en&product=4313690I would like you to have this information of how to open your computer case, but would also like you to view the 6th photo down, showing the side panel of the computer case removed.
Not a very large photo of the inside of your computer, but helps me explain.
At the bottom is a black plastic Fan assembly.
This is the Processor fan.
The fan sits on a finned Heatsink, and the Heatsink sits on the top of the Processor's case.
The Fan and Heatsink are the cooling components for your desktop computer.
They need to be clean, as well as the entire inside of the computer, but more attention needs to be paid to these two components.
When a Processor overheats it turns off. (BIOS turns it off)
This is a fail safe feature designed to keep the Processor from burning up.
(A Processor has a Thermal Limit)
No Processor operating, No computer.
This Fan/Heatsink combo is similar to the design in your computer,
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7151732&CatId=4922Note the fan blades, and square surrounding cage. (Shroud)
The fan blades, center hub, and surrounding cage must be kept clean.
Note the aluminum looking finned square object under the fan assembly.
This is the Heatsink.
(Left-click on the photo, then in the small window that comes up, hover your mouse cursor over the different views)
The Heatsink is essentially a flat plate of metal with tall, thin fins protruding from it.
The plate of metal absorbs heat from whatever object it is placed against, (In this case a Processor), and the tall, thin fins absorb heat from the plate of metal.
The fins then radiate the heat away. The fan pushes air in-between the fins, and around the fins, and helps to carry heat away.
In-between the fins, and on the outside of the fins, needs to be clean.
A) Computer unplugged from power. Open the computer case on a table.
It is now time to observe Anti-Static Precautions BEFORE reaching inside your computer.
Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out (Short Circuit) the delicate hardware components inside a computer.
Computer case open, computer unplugged from power, TOUCH an unpainted surface of the metal frame, of the open computer case.
This action will relieve your body of Static.
If you leave your computer in the middle of working on it, be SURE to touch the metal frame again upon your return.
Buy two cans of compressed air for computers. Break the lock tab off of the top of one can, insert the plastic straw provided.
Refrain from tilting the can of air. It will happen, but try to refrain from letting it.
(The propellant comes out, and the can freezes up faster)
I would suggest starting with a few Q-tips on the fans blades, center hub, and shroud.
You aren't trying to wipe the 'Gunk' off, just disturb the 'crust'.
Once the outer 'crust' is disturbed, the air will remove it easier.
{You may wish to wear a dust mask}
Use the straw, and point it at the Heatsink fins. Move in a pattern as you clean.
Suggest now to start at the top left inside corner of the computer case, and spray air to the right top corner. (Inside)
When you start hold the can level, and squeeze the trigger in all the way. As you reach the end of the other side, let go of the trigger.
Move down a couple of inches, spray across again. Keep going until you reach the bottom of the computer case. Spray as a professional paint sprayer would.
Tilt the case top forward towards you, and spray the bottom out.
Close the computer case, plug the computer back into power.
WAIT 2 minutes, turn the computer on.
{As you spray air you will notice along the way that the air pressure drops. The nozzle opening of the can of air is freezing shut. Sit the can down, let it warm up. Use the second can of air }
If this doesn't solve the problem, the problem is a bad Power Supply.
Enough power to turn on LED lights, and maybe spin fans, but not enough to turn the Processor on.
1) If all of the LED lights were on at once, they would use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts of power.
3) A typical Processor can use 51 to 125 Watts of power. Depends on what Processor it is.
(Older processors such as a Pentium III for example, use less than 51 Watts)
The AMD Athlon II X2 250 processor in your computer can use up to 65 Watts.
http://en.wikipedia.org/wiki/List_of_AMD_Athlon_X2_microprocessors#.22Regor.22_.2845_nm.29You can replace the Power Supply yourself, and save money.
I can guide you on here, and give you links to detailed information.
I can also recommend a Power Supply with the thought in mind, of the 'Best bang for the Buck'
Reliable, and yet economical.
(One such example of how to replace a Power Supply, in an HP Pavilion p6653w,
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01684432&tmp_task=useCategory&cc=us&dlc=en&lang=en&lc=en&product=4313690For additional questions please post in a Comment.
(Believe upper right of your page. Our site is revamping all the time)
Regards,
joecoolvette