mike

First Step: Unplug the charger and take the battery out. Press and hold the power for about 10 seconds. Do not install battery. Plug in the charger and press the power button. Does anything happen? Lights, fan, screen, etc. Oh and never, ever clean ANYTHING in a computer or any electronics with water!!!! Second Step: We will seee.

As with all driver problems it must first be COMPLETELY uninstalled. Not just the standard “uninstall”. Use one of the very good freeware uninstallers that scour the registry, etc., as well. Reboot and then re-install. Let me know how it goes. If it doesn’t work probably a hardware issue.

Assuming there is no hardware damage try this: (1) Power off the laptop. (2) Take the battery out. If the battery is integrated and does not have a latch to release it then leave the battery inside the laptop. (3) Disconnected AC adapter from the laptop. (4) Press and hold the power button for at least 15 seconds. (5) Reconnect the battery and plug the AC adapter. (6) Power ON the laptop.

Go into BIOS and see if a boot drive appears on the Boot list. If yes select that drive, then see if set to UEFI of Legacy. Set it to the other, UEFI or Legacy, save and see if it boots up.

I just read the manual and it does explain what red LED and 5 beeps is. “Pre-video memory error.” It goes on to say: (1) Reseat the DIMM’s (2) Replace one at a time to isolate faulty module (3) Replace third-party memory with HP (though just make sure they are DDR3L-1600 or 1866 1.35v, etc.) ( https://www.crucial.com/ScanListView?mod...-upgrade-for&urlRequestType=Base&catalogId=10151&...-1&manuFacturer=HP-Compaq&langId=-1&storeId=10151&modelCatId=1301050) (1) Replace system board If the RAM are, in fact, the correct ones and seated properly then it may be the system board.

If you will be working with a wide variety of equipment get both. Imperial is common in North America amd metric pretty well the rest of the world though because of the size of the American market you will find Imperial outside that region.

Hi Jose, As you have said “…wifi network only if it is extremely near to the router ..” it sounds like the antenna is not connected. Check this: How do I remove the wifi card? Let us know how it goes.

I presume you followed Andrew Bookholt’s teardown? MacBook Unibody Model A1342 Upper Case Replacement Why not just replace the keyboard for US$24.99 ? MacBook Unibody (Model A1342) Keyboard

Check BIOS settings for default display. Resetting the System Setup (BIOS) to its Default Settings (1) Reboot the computer. (2) When you see the Dell logo during POST, press the <F2> key to enter the setup screen. (3) On the System Setup screen, click Load Defaults. (4) Confirm to load the defaults.

Alternative answer: You don't mention if the charging light comes on or not nor how long this has been happening. Also, how old is the battery? Has the time of holding a charge decreased gradually or has this been sudden? If gradual and the battery is a few years old then try replacing the battery.