Test your PSU power supply unit or replace it if your power supply units fan is not working your PSU is faulty
http://pcsupport.about.com/od/toolsofthetrade/f/powersupplytest.htm
Testing and replacing the PC power supply
http://www.youtube.com/watch?v=hbNxhvm0czs
One bad lead can cause a computer to continue on a cycle of restarting or to shutdown or fail to detect ,boot up a computer hard drive
WARNINGBefore you start troubleshooting remember that you are dealing with electricity that can KILL.
http://www.kitchentablecomputers.com/static.php - rules
Only work inside the computer case when the power has been switched off and disconnected. Never open the power source.
Some of the below steps recommend removing physical parts within the computer.
While in the computer it is highly recommend that you be aware of ESD and its potential hazards
Test all leads that attach to your hard drive power and data cables IDE ,SATA
the leads from yourMOTHERBOARD TO YOUR HARD DRIVEmake sure they have a secure dust free connections and are not faulty or just replace them they could be faulty
Make sure all leads that are attached to your dvd \ cd floppy drives have secure connections and are not faulty or just replace them they could be faulty.
Computers need power and data to travel through every working device to continue its cycle and have an end so any faulty leads will end up with a computer error.
Even something as small as a faulty electrical or fan lead can cause you problems
Motherboard and a Hard Drive any leads between them will fail before your motherboard or your hard drive if its a flat ribbon 40 pin type IDE replace it this will be the first to fail.
Check all electrical power input and extensions make sure they are securely seated even the cd/dvd floppy drives need to have current go through make sure these drives are working
also check the Cmos battery and computer RAM modules make sure they are securely seated with no dust built up or in the sockets on some motherboards cmos batteries are soldered in.
Remove the memory modules from their slots.
Take the opportunity to clean the slots on the motherboards and the memory module connectors.
Use compressed air to blow dust away and clean contacts with a soft cloth.
Do not use a metallic vacuum cleaner if it touches any component it may create a short and cause damage to the motherboard or other components.
Do not use solvent that may attract dust and never poke things like cotton buds in to slots. lightly rub an alcohol (Methylated Spirits) on a cloth not to hard let the alcohol do the work on the copper gold or silver tabs and r
Allow the pins to dry.
They will air dry in a matter of minutes.
If reseating the memory did not resolve the issue try swapping the location of the memory.
If you have only one stick of memory in the computer try moving it to another slot and then boot the computer.
Check the memory module and memory slot contacts.
They are either copper tin or gold.
The colour will tell you which they are.
Mixing tin and gold can result in corrosion that prevents proper contact.
Look for any sign of physical damage to the memory module, memory slots or the motherboard.
Reseat the memory modules.
You should hear an audible click when they are in place.
Check you CPU central processing unit make sure its securely seated and has thermal paste it might be getting to hot the thermal paste will help disperse the heat
Thermal compound is a sticky paste that is placed directly onto the CPU.
http://www.hardwaresecrets.com/article/Thermal-Compound-Roundup-February-2012/1490
Allowing for a more direct heat transfer between the CPU and HEAT SINK and preventing air gaps from forming between the CPU and heat sink.
Another possible reason could be a memory dump you might be running to many programs at the one time putting to much strain on the CPU central processing unit.
If you can get your computer stable enough
scroll to bottom toolbarbottom of screen right click select task manager
applications you will see whats running if you see anything you dont need running select end now
also under processes see what is ticking over again if you see something you do not need to be running end nowor you might uninstall that program and some unnecessary programs
Remove the memory modules from their slots.
Take the opportunity to clean the slots on the motherboards and the memory module connectors.
Use compressed air to blow dust away and clean contacts with a soft cloth.
Do not use a metallic vacuum cleaner if it touches any component it may create a short and cause damage to the motherboard or other components.
Do not use solvent that may attract dust and never poke things like cotton buds in to slots. lightly rub an alcohol (Methylated Spirits) on a cloth not to hard let the alcohol do the work on the copper gold or silver tabs and r
Allow the pins to dry.
They will air dry in a matter of minutes.
If reseating the memory did not resolve the issue try swapping the location of the memory.
If you have only one stick of memory in the computer try moving it to another slot and then boot the computer.
not having enough computer ram can cause memory dumps
If you are not sure if a module is right for your system use the Crucial Memory Advisor tool for a list of guaranteed compatible modules.
first you will need to select the manufacturer from a drop down list then select your product line from a drop down list then select the model then click find it will take you directly to compatible ram also you will have an option to scan your system
you should always for a guarantee on any ram modules when purchasing them or buy working pairs if possible.
Hey Jaime,
Unfortunately, Dell does not have any available schematics for wiring the x230 speakers available. You would have to maybe contact Logitech.
Thank You,
Dell-Jesse L
Dell Social Media and Communities
I think it's the USB port problem.. try unplugging the keyboard plug and plug it to another port.. and you can also try restarting your computer.. if problem still occur, your keyboard probably malfunctioned
then open control panel
add new hardware click yes or next scroll down to network hit next or yes
then first try with automatically detect
then restart pc when it's done
do you know your exact ethernet driver
do you have a internet icon in your taskbar
click on the below link on google there are wide range of diagrams, select the one you want ;https://www.google.com/search?q=dell+dimension+2350+motherboard+diagram&source=lnms&tbm=isch&sa=X&ei=olNJUp37HoHm4wTdgYGoCA&ved=0CAcQ_AUoAQ&biw=1440&bih=771&dpr=1&sout=0
Make sure the
batteries are inserted correctly and have charge if applicable
usually located
on the underside of the mouse there might be small plastic sticker with a
phillips head screw under it rub your fingernail over the top to see if it has
a screw
or make sure the
usb device is properly inserted for wireless
the usb or Ps2
connection are secure with a dust free connection
or it might be the usb for wireless mouse or lead connecting to the usb
port or even a faulty mouse
if this does
not fix the problem
Restart you computer tap the f8 key repeatedly to enter
safe mode where the only things working will be your keyboard and mouse
allowing you an attempt to repair your computer
If done properly the user should
get to a screen similar to the below screen.
Select the option for Safe mode
command prompt only
Windows Advanced Options Menu
Please select an option:
Safe Mode
Safe Mode with Networking
Safe Mode with Command Prompt
Enable Boot Logging
Enable VGA mode
Last Known Good Configuration (your most recent settings that worked)
Directory Services Restore Mode (Windows domain controllers only)
Debugging Mode
Start Windows Normally
Reboot
Return to OS Choices Menu
Use the up and down arrow keys to
move the highlight to your choice.
select safe mode
click start control panel
administrative tools computer management device manager scroll to mice and
other pointing devices you might see a yellow exclamation mark ! or question
mark ? or a red x
right click you will need to update
the driver
Click start control panel mouse you
should see 4 tabs buttons pointers pointer options and hardware under hardware
you have options to troubleshoot also you can select properties under driver
you will have options to update driver rollback driver or uninstall also
I have found that the best way to
adjust your mouse settings is to create a control panel in your bottom toolbar
scroll to the bottom of your screen right click you will see an array of
options select the toolbar option then select desktop
then you will see the desktop in the
bottom toolbar select the 2 arrows >> then all control panel items then
select mouse this is in WINDOWS 7
in XP you will have to select the
new toolbar option once you have that a browse option select my computer then
control panel then a control panel option will be in the bottom toolbar
Click start control panel keyboard hardware make sure you have the right
keyboard selected
or you might have uninstall the keyboard then restart your computer then
reinstall it and its drivers
click start control panel administrive tools computer management device
manager scroll to keyboard you might see a yellow question
/exclamation mark ? ! or a red X right click update driver
http://www.microsoft.com/hardware/download/download.aspx?category=MK
complete range of drivers