The plastic front of your desktop computer is the Front Panel.
The area of contact pins on the motherboard, that the wires from the Front Panel go to, is the Front Panel header.
F_PANEL_1
The Front Panel header contains connections for the Power On switch, Power On LED light, HarDDrive activity LED light, and so on.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00864922&tmp_task=prodinfoCategory&cc=us&dlc=en&lang=en&lc=en&product=3339274
(Look at the motherboard photo. The Front Panel header is at the bottom right. Scroll down for the motherboard illustration )
There are 9 contact pins.
4 across the Top row, and 5 across the Bottom row.
The four pins across the Top row are numbered EVEN.
From the Left side going towards the Right side;
Pins 2, 4, 6, and 8. There is NO pin 10, just a blank spot.
The five pins across the Bottom row are numbered ODD.
Pins 1, 3, 5, 7, and 9.
A) Pins 2 and 4 are for the Power On switch
B) Pins 6 and 8 are for the Power On LED
(LED is dim when the computer is on? Switch the wires around )
C) Pins 1 and 3 are for the HarDDrive activity LED
(LED is dim when the harddrive is operating? Switch the wires around)
D) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.
How to know which wires are for the Power On switch, Power On LED, and HDD LED?
Follow the wires into the Front Panel. Remove the Front Panel, and follow them.
(Need guidance removing the Front Panel post in a Comment )
For additional questions please post in a Comment.
Regards,
joecoolvette
SOURCE: How to upgrade a new compaq presario SR2150NX?
Add more RAM, 512MB ram will slow your computer down because when you run out of ram the computer uses the hard drive as vitrual ram. I have 4GB in my Vista machine and it is faster than XP.
Another suggestion is to turn off the hard drives indexing. Right click on your "C" drive and unhook the "index this drive for faster searching" box.
SOURCE: compaq presario sr2150nx
Yes, I have had to do a system recovery on my machine, and it it doesn't take quite as long, but that is mainly due to my 4gigs of ram and quad core processor.
SOURCE: I have a Compaq Presario, model #: SR2150NX W/120GB HD
You should be able to add a SATA drive to that machine (IDE should also be available to you). The spec drive in your machine is a 120GB, you may get a decent increase in speed if you use a newer SATA hard drive with a fresh install of Windows on it and simply put the existing drive as the slave or drive 2.
SOURCE: HOW DO I download sound for my SR2150NX COMPAQ
You can download Compaq Sound Driver from this site. Compaq Sound Driver.
SOURCE: Compaq Presario SR2150NX doesn't turn on. Front
On the back of the Power Supply there should be a Green LED, When you power it on if it is flashing, this means that the Power Supply is dead and you need to replace it.
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