Question about Compaq Presario Notebook
Thats a little vague - sounds like a hardware fault.
Go for the easy things first:
I'd try either swapping Ram (or pull out 1 of the 2 simms to check if either is faulty).
Disconnect Hard disk and see if it will POST (obviously it wont get much further)
Reset the CMOS (you will have to open the Laptop in most cases - nightmare for beginners).
Posted on Jan 12, 2009
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 16, 2013 | Canon ImageRUNNER 3235 Black and White...
Mar 22, 2008 | Computers & Internet
Oct 23, 2011 | Dell 1209S DLP Projector
Here is the reason for that problem per the manufaturers web-site
The low-pressure switch senses the refrigerant pressure in the sealed refrigeration system to
protect against certain conditions that could be detrimental to compressor life. The switch shuts
the unit down in the event of loss of refrigerant, fan motor failure, evaporator freeze-up and
airflow blockage. The switch automatically resets when the pressure rises to normal operating
pressures. The display will show "LP" if this switch is tripped.
The low-pressure switch will shut the heat pump down when the evaporator starts to freeze.
When the unit starts to freeze the low-pressure switch will be tripped, causing the display to read
"LP" This will prevent the evaporator from becoming damaged or deformed.
If the air outside the heat pump is not warm enough to produce heat, the system will shut down.
The actual point at which your unit will shut down due to low temperature varies depending on
which model you purchased, current weather conditions, and the amount of sunlight reaching the
heat pump. The shutdown can occur anywhere within a wide range of temperatures, usually 45°F-
55°F. This is not a "fixed" range. We stress that climate conditions, sunlight, and various models
respond quite differently to low ambient temperature. A shutdown occurs because low
temperatures will activate the systems low-pressure safeguard switch (digital thermostats will
display a code "LP".) The unit will start up again when the temperature has raised enough to reset
this switch. Note: Low ambient temperature does not necessarily affect the Chiller models
or the cooling cycle of the heat/cool units.
If this post has helped you, please take the time to vote positively for me on this site. If you need additional help, I can be reached @: email@example.com
Oct 23, 2010 | Hayward Heatpro 81k Btu Swimming Pool Heat...
Aug 30, 2010 | Nokia N70 Cellular Phone
Sep 07, 2017 | Intel Desktop Board D845EPI Motherboard
Mar 18, 2010 | Fuji FinePix A350 Digital Camera
May 21, 2007 | Kenmore 33464 / 33465 / 33469 Gas Single...
Feb 25, 2007 | Bose Wave Radio
29 people viewed this question
Usually answered in minutes!