Question about HP Compaq Presario CQ50-110US Laptop

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My light blinks three times and nothing happens?

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  • HP Master
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1) I would like you to remove ALL power to the Notebook PC. Remove the AC adapter (Charger), and Battery.

2) Place a towel on the table you'll be working on. Place the laptop upside down on the towel. (Bottom facing up. Towel helps to protect table surface, and laptop finish )

3) Looking at the bottom of the laptop, with the Battery Compartment facing away from you, the Memory Module Compartment access cover, is in the middle. (Rectangular cover with a vent in it. The larger Harddrive Bay access cover is below it )

Loosen the two Philips head screws in the cover. Lift the cover on the same side as the screws. Lift the cover at approximately a 45 degree angle, when removing. There are small plastic tabs formed out of the cover, on the opposite side of the screws. These may be easily broken off, if the cover is lifted straight up.

The spring-like retaining clips hold the ram memory module in place.
One on each end. These are gently spread to release the ram memory module.
When released the ram memory module will pop-up slightly.

The ram memory module should be removed, at NO more than a 45 degree angle.

Bringing the ram memory module straight up when removing, will bend the contact pins in the ram memory slot, and damage the gold plated contact pins on the ram memory module.

The gold plated contact pins develop a type of 'corrosion', after time.
This leads to a poor contact with the ram memory module to the ram memory slot.

Advise use a pencil eraser to clean the gold plated contact pins.

http://en.wikipedia.org/wiki/File:1GB_DDR2_SO-DIMM.png

If using an eraser on the end of a pencil, and not a solid eraser, refrain from letting the metal band touch the contact pins.

Handle the ram memory module by the Body.
The Body is all of the ram memory module, Except the contact pins.

The Body is coated with a see-through protective plastic. Helps shield the ram memory module from Static. (Electricity)

The bottom of the ram memory module is the contact pins.
Start at the top of each contact pin with the eraser, and stroke down.
Do this for All contact pins. Both sides of the ram module.

Doesn't take much rubbing to clean the contact pin. When finished use air to remove the eraser dust. You can use a can of compressed air for computers, if available, or air pressure from your mouth will be sufficient.

Reinstall the ram memory module/s. Reinstall the Memory Module
Compartment cover. Reinstall the Battery. Turn the laptop over on a Hard surface, (No towel), and attach the AC adapter. Plug AC adapter into power.

Wait 1 minute. Turn the laptop on.

Still no joy? Post back in a Comment.

Regards,
joecoolvette

Posted on Nov 27, 2011

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