Question about HP Pavilion Elite m9515y PC Desktop

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Monitor display no signal

Computer freezes up, monitor displays (no signal) memory cards was replaced but problem was not fixed

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2 Answers

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  • HP Master
  • 5,660 Answers

Usually when a computer 'freezes up', it is due to the Processor (CPU) overheating.

I assume when the Ram Memory modules were replaced, the computer was cleaned out on the inside?

Thermal Paste:

The top of a Processor, and the bottom of the finned Heatsink that sits on it; are not perfectly smooth.

A magnified view would detail, 'Ridges, Valleys, and Pitholes'.
When the Processor and Heatsink are mated together, there are now Air Pockets formed in-between them.

Air is now an Insulator, not a Conductor.
Thermal Paste fills the above imperfections, and is an Excellent conductor of heat.

You want to transfer the heat from the Processor, to the finned Heatsink; so the fins of the Heatsink can radiate the heat away.

(Air flow from the Processor fan, helps carry heat away from the fins of the Heatsink)

After time (age), and heat; the Thermal Paste dries up.
Looses it's thermal conductivity properties.

Processor overheats, and computer freezes up.

Let's look at the Specifications for the Pavilion Elite m9515y, and then I will show you a detailed view; of the top of the Processor,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01619745&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=3867599

AMD Phenom X4 9850 processor,

http://www.cpu-world.com/CPUs/K10/AMD-Phenom%20X4%209850%20-%20HD9850WCJ4BGH.html

This is a GENERAL view of a Heatsink/Fan combo.
It is the finned Aluminum Heatsink I would like you to look at.

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7151732&CatId=4922

There are smaller views shown underneath the large Main view.
Click on the small view all the way to the Right.
This shows you the Bottom view of the Heatsink.
The area that sits on the Processor.

Secondly, an AMD Phenom X4 9850 runs -> HOT.
55 degrees Celsius to 61 degrees Celsius.
That is 131 degrees to 141.8 degrees Fahrenheit, respectively.

Replacing the Thermal Paste will be a reoccurring procedure.
Especially if the computer is dirty inside, and not cleaned on a regular basis as needed.

(Some areas have a high dust content. Cleaning the inside of the computer, is based on how fast the computer get's dirty inside)

1) Computer off, all cables are removed from the outside.
If you are NOT exactly sure where they all go, NOW is the time to make notes, and a drawing.

2) I lay a soft static free cloth on the table I'm working on.
(If I'm not using the workbench)
Helps prevent scratching the table, and computer.

Then after removing the Side Panel, I lay the computer on the table, opening of computer case - UP.
Makes it easier to work on the computer.

-> STOP <-
Now FOLLOW Anti-Static Procedures.

Your body carries Static electricity. Static WILL fry out (Short Circuit), the delicate hardware components inside a computer.
Relieve your body of Static, BEFORE reaching inside your 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.

IF, you leave your computer in the middle of working on it, be SURE to Touch the metal frame again, upon your return.

4) The Processor fan has a cable, (Wires), that comes from it, and plugs into the motherboard. This cable is unplugged from the motherboard.

The Phenom X4 9850 uses an AM2+ processor socket,

http://en.wikipedia.org/wiki/Socket_AM2%2B

Looking at the Yellow retaining bracket, note the two TABS on either side. In the photo, the Left side, and Right side.
The Heatsink will have Clips, that clip to these Tabs.

Here is more detailed information,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph07139&tmp_task=useCategory&cc=us&dlc=en&lc=en&product=3867599#N446

Scroll down. Go to the bold subheading -
Step 4: Removing and installing the processor

Scroll down a little more, click on the + sign to the left of -
Remove and install a socket type processor

In the four views shown, look at the Top/Left view, and the Bottom/Right view.

Unfortunately there are many styles of these retaining clips.
Most have a lever on the side, that you pull up on, and this releases the U-shaped clip; from the processor socket's retaining tab.

Some have it where there is a flattened area for the top of the clip, that is pushed down on, and this brings the U-shaped clip down away, from the processor socket retaining tab.

Once BOTH clips are released, then the Fan/Heatsink combo can be lifted off of the Processor.

5) I use an old credit card to scrape off as much of the old Thermal Paste, as I can.
(It's PLASTIC, and stiff)

Scrape off the top of the Processor, and bottom of the Heatsink.
(After you scrape once, then use a cloth to wipe the credit card off, and proceed again)

After removing as much as I can with the plastic scraper, then I use Q-tips dipped in Isopropyl Alcohol. (Rubbing alcohol)
I find 91 percent and higher is best. 70 percent can be used.
IMHO 50 percent = NO

It is now 50 percent WATER, and 50 percent Alcohol.

Takes a LOT of alcohol soaked Q-tips! It usually turns into a gooey mess.

CAUTION!!
Isopropyl alcohol is EXTREMELY FLAMMABLE!
Use in a WELL ventilated area with NO sparks or flames present!

How clean? Clean enough to eat off of, bvi47.
(But don't! Ewwww! lol!)

Then PROPERLY apply fresh, new Thermal Paste,

http://www.hardwaresecrets.com/article/274

Reinstall the Heatsink/Fan combo. Reconnect the Processor fan cable to motherboard.

While you are at it, remove the Ram Memory one more time, and reinstall.
Why?
Because Ram Memory gets bumped very easily, and the ONLY method to ENSURE that it is seated well, and properly; is to remove/reinstall.

For additional questions please post in a Comment.
Regards,
joecoolvette

Posted on Apr 19, 2013

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  • HP Master
  • 3,400 Answers

If you changed videocarrd,and it stands no signal on your monitor.
it's proberly for the videocard don't get the right power.

Posted on Apr 19, 2013

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SOURCE: "No Signal" on monitor after boot

hi try to use different slot on your motherboard see if that helps if not try different video card...if that didn't help it might be your motherboard that went bad

Posted on Aug 24, 2008

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SOURCE: my monitor is displaying NO SIGNAL. Tried another

I woud guess it's the MoBo but can no way guarantee that without testing it myself as I have the equipment to do so.

Posted on Jun 15, 2010

info2u
  • 596 Answers

SOURCE: when I turn on the

Hello,

You should check your monitors connection to the pc. If the connection is good, you will need to do one of two things:

1. Try using a monitor that you know works. If that monitor works on your pc then your other monitor needs replacing.

2. If you connect another good monitor to the pc and it does not work, you will need to replace your video card in your pc.

Good Luck
C2Solutions

Posted on Feb 25, 2011

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