Solid amber light in front of desktop, nothing else work

You listed this under PC Laptop? It's a Desktop? Have you ever done a CPU upgrade? You are limited to what will work with your machine, Mobo and other components. Your Mobo is, of course, AMD compatible, so if you read the specs: http://support.acer.com/acerpanam/desktop/0000/Acer/AspireX1200/AspireX1200sp2.shtml The AMD Athlon X2 dual-core is best option. Memory is a easy option to increase speed a bit. Remember, with a 32bit OS the most memory it can use is 3.80 GB's More or Less. With a 64bit OS use more. I have done many CPU upgrades, you may not get the Speed/ processing increase you expect. After all, the components work in conjunction with one another. Do your research on Socket type, Pins, Power requirments, etc., etc.Check, Verify, then re-Check and re-Verify. Use this little freeware program to assist you, it list Spec info in detail, SPECCY at: http://www.filehippo.com/download_speccy/.

Any socket 754 motherboard of your choice.

The Asus K8S-MX mobo?

http://www.asus.com/999/html/events/mb/socket754/k8s-mx/overview.htm

CPU (Processor) Support:

http://www.cpu-upgrade.com/mb-ASUS/K8S-MX.html

IF, the mobo (MOtherBOard) is in a computer that is working, and internet capable, I suggest you use CPU-Z from CPUID.com

It's a free, tiny, tiny, program.
Information on CPU-Z on Wikipedia,

http://en.wikipedia.org/wiki/CPU-Z

(Home page URL of CPU-Z is listed to the right)

Should you need help in downloading, installing, or using CPU-Z, simply state so in a Comment.

IF, the motherboard is Not in a working computer, then you need to Physically look at the top of the Processor's case.

You are looking for the Part Number.

Examples using the AMD Athlon 64 processors,

http://en.wikipedia.org/wiki/List_of_amd_athlon_64_processors

(For the AMD Sempron processors, just type -
List of AMD Sempron processors, in the Wikipedia search box, and left-click on the magnifying glass icon.
Same thing with AMD Sempron 64)

Some basic photo examples of what the part number will look like, on the top of the Processor's case,
(Scroll the page down),

http://www.cpu-world.com/CPUs/K8/TYPE-Athlon%2064.html

NOTE*

Your body carries Static electricity.
Static WILL fry out (Short Circuit) the hardware components inside a computer.

You probably won't see it, Or feel it.
The Processor is the MOST susceptible hardware component to static shock.

Handle it by the sides of the case, refrain from touching the pins on the bottom.

Work on a table. Computer unplugged from power, computer case open, TOUCH the metal frame of the computer case to relieve your body of Static.

If the motherboard is already out of the computer case, TOUCH the metal frame of an empty computer case, BEFORE you touch the motherboard.

On top of the Processor is a Heatsink.
This has to be removed.
There will then be Thermal Paste.

I use an old plastic credit card, (Non-static item) to scrape as much of the old thermal paste off, as I can.
Do Not bear down too hard, as you may make the Part Number unreadable.

I then follow with Q-tips dipped in Isopropyl Alcohol.
(Rubbing alcohol)
91 percent alcohol is best, but 70 percent will do in a pinch.
I would not recommend 50 percent.
(It's 50 percent Alcohol, and 50 percent Water. 91 percent Alcohol, and 9 percent Water is best)

It will take a lot of Q-tips dipped in alcohol, as old thermal paste is usually a gooey mess. (Unless it is dried up. Then it's worse)

CAUTION!
Isopropyl Alcohol is EXTREMELY FLAMMABLE!!

Use in a WELL ventilated space with no flames, or sparks present.

Have any further questions simply state so in a Comment.
(Believe upper right of your page)

Compatible Processors are AMD Athlon 64, AMD Sempron
with a Front Side Bus Speed 800 MHz

If you are satisfied with my answer, be sure to click on the "Thumbs-Up". If you have further questions, please feel free to ask them. Thanks for using our service!

The ASUS A8M2N-LA is the motherboard used by HP for the new D4500e AMD AM2 PC.

Here are the details:
Motherboard manufacturer's name: ASUS A8M2N-LA
HP/Compaq name: Nodus-GL8E
CPU/Processor
Socket: AM2 Supports AMD Athlon 64, Athlon 64 X2, and Sempron processors
Front-side bus (FSB)
2000 MegaTransfers/second
Chipset
GeForce 6150 LE chipset
BIOS features
Award brand system BIOS Keyboard combination to used to enter BIOS: F1
Form factor
Micro-ATX: 9.6 in X 9.6 in
Memory
Four 240-pin DDR2 DIMM sockets, Supports PC 4200 (533 MHz) and PC2 5300 (667 MHz) DDR2 DIMMs, non-ECC memory only, unbuffered Maximum HP/Compaq approved memory is 4 GB*
PS - as you can see the rangeis 533 - 667 MHz. I would suggest you call HP support and ask if it will support 800 MHz,

Check Dells link, tells you all Tech specs to upgrade to.


http://www.dell.com/us/en/dfh/desktops/dimen_c521/pd.aspx?refid=dimen_c521&s=dfh&cs=22&~tab=specstab

939 pin Athlon 64 X2 / Athlon 64 FX / Athlon 64 are the supported CPU's.
For the SLI connector, it's a 2 1/2 inch connector. (63.5mm).

i could only fins thease specs for you

AMD Athlon up to 2400+
AMD Athlon XP up to 2600+
AMD Duron up to 1.8GHz

Max speed supported for your mobo is: DDR2-533
You will have to buy (4) 1gb sticks (2gb sticks not supported)
To use all four gigs of ram you need a 64 bit os.32 bit only supports 3gb of ram. Hope this helps!
Here is the specs :

ASUS A8M2N-LA (NODUS-GL8E) (DDR2-533MHz) Memory Maximum Memory 4GB Memory Slots 4 (4 banks of 1) non-removable base memory 0MB Machine name: ASUS A8M2N-LA (Nodus-GL8E) Motherboard
CPU options: Supports AMD Athlon 64, Athlon 64 X2 and Sempron processors.
Chipset: Nvidia GeForce 6150 LE Chipset
HD Bus:
Front Side Bus options:
Memory Speed options: PC2-4200 DDR2-533 240pin SDRAM DIMM
Special notes:
- Motherboard manufacturer's name: ASUS A8M2N-LA
- HP/Compaq name: Nodus-GL8E


NOTE: *Actual available memory may be less w/o 64 bit os

I SEE YOU MENTIONED NOTHING ABOUT INSTALLING ANY DRIVERS FOR THE HD'S DID YOU?
GOOD DAY
KZ