Emachines220 celron 2.5 gig

I think that your PSU is dead and your motherboard must be dead too (not sure)

If it's Windows 7 32bit it has limits on the amount of ram it can use.
Google it and see.

Hi,
If 2 memory banks are filled totalling 2 gigs then you can obviously add another 2 gigs totalling 4gigs. This is a lot of memory for a system & although I'm not sure if your board can handle 2 gigs per bank, I personally believe that 8gigs is overkill & unneccesary.

Best wishes,
Graemevm

Its normal that the available ram is lower that the total memory. Once you start the computer, all system process will consume your CPU and RAM. 704MB of available RAM isn't bad if your a regular user. If you want more available RAM, check you configuration if there are unwanted programs that launch on start up.. You can do this by clicking the start button>RUN and type msconfig. Then a new window will appear and click on startup. Untick all unwanted application. This will make unnecessary or unwanted application to run on startup which consumes resources of your CPU and RAM. But if you really are not satisfied with the speed of your system despite of the available RAM is not that small, then go buy an additional RAM for your system.

An external file-storage device has 4 major components:

* a USB cable,

* an "internal" disk-drive, inside the enclosure,

* a USB-to-disk-drive adapter, inside the enclosure,

* an external power-supply.

Try a different USB cable.
Try connecting the device to a different USB port on your computer.
Try connecting the device to a different computer.

Take a multi-meter, and measure the actual voltage & amperage outputs from the power-supply, and compare to the specifications on the label on the power-supply.

Open the enclosure. Remove the disk-drive. Connect the disk-drive as a "slave" disk-drive in a desktop computer, to see if bypassing that USB-to-disk-drive adapter bypasses the problem.

Search online for a professional "data recovery service". For a significant fee, they can repair the disk-drive just long-enough to read your 2GB of data, and copy the files either to a new disk-drive, or to burn the files to a few CD-R disks or to one DVD-writable disk.

Hello,

These units are known for having issues with the internal power supply board. There are parts called capacitors that fail due to heat buildup in the monitor case. When they die the power supply stops working and you get a dead monitor just like you have. If you can solder then you should be able to repair your unit. We have a free step by step repair guide posted on our web site at: http://www.ccl-la.com/blog/index.php/dell-e172fpc-e173fpc-repair/ The repair should take less than 20 minutes to do and cost less than $15 for parts.

I hope this helps, if so please rate our solution.

Buddy
Corporate Computer
www.ccl-la.com

I am not sure how you checked the power supply but they can be misleading. Many failed power supplies still have enough power to turn on lights and spin fans but not enough for a system startup.

Unfortunately, MB's are not designed to be serviced. Considering 1 or 2-hours of labor costs more than most motherboards these days it is just not worth trying to fix them. Therefore, if it is not the PS you need to buy a new MB.

Good luck!

turn off power and reinstall the jumper in normal mode position

This is an oldtime POST code memory error. Likely that ram is either installed wrong, bad RAM or the mobo doesn't like one of the memory sticks.

See http://www.computerhope.com/beep.htm.

You must count the beeps.

Use HP D530 power supply to run SSF desktop which can run on 12v dC current. Just by using one 6000VA in series