|Installing lots of programs or data itself does not make the computer run slower, unless there is not enough free space left on the partition Windows is on. If a program is not running, or if a file is not being loaded, it cannot slow down the computer. |
One major thing that makes it slower is the number of programs that are running at one time - often many of these are installed as startup program modules that load when Windows first loads when you first load the software.
Other common causes...
- running more than one anti-malware program that does the same thing at the same time - there is not supposed to be more than one of those running any module in them at the same time.
- you have malware that has not been detected yet.
"He wants to format the Hard Drive by install new Windows but during setup process it has a message come out some thing like this (Windows can not find any hard disk on this computer). "
He must have been trying to using a regular Windows CD - this problem does not happen when you use the proper Recovery CD(s) for the brand name model.
The laptop has a SATA hard drive.
If the bios setup has the SATA drive controller mode in SATA (AHCI) mode, XP Setup cannot see the drive when it first looks for one in the first part of Setup.
If that mode is set to IDE compatible mode or similar, Setup will be able to see the SATA hard drive.
He should not be using a regular Windows CD - he should use either a single Recovery CD, or a Recovery CD set!
There is at least one program installed by Dell on the hard drive that can make a Recovery CD or a Recovery CD set - you are supposed to make that or those while Windows is still working, yourself, preferably as soon as you can after you get the computer!
If there is nothing wrong with the data on the second partition on the hard drive (all brand name systems come with two partitions on the original hard drive) you can use the single Recovery CD meant for that along with the data contents of that partition to restore your original software installation on C to the way it was when he got the computer. If not, only the Recovery CD set can do that.
See the Dell web site for further info!
If Windows still works despite it being slow, make that/those!
If it doesn't, you can order the Recovery CD set from Dell for the exact model, and that will probably cost a lot less than buying even an OEM XP Home CD.
E.g. it cost me $27.xx for a 5? CD set for a Compaq model, before shipping.
Windows included with the original Dell software installation already has the drivers for the SATA drive controller(s) on the mboard installed, so it seees a SATA drive fine even if the bios Setup is set to SATA (AHCI) mode, but a regular Windows CD does not have those drivers.
You CAN use a regular XP Windows CD if you can set the bios Setup to IDE compatible mode or similar, in which case Setup will see the SATA hard drive, but the Windows Product Key on the laptop case, if it's there (usually on the bottom), will not be acceptable for Windows Activation unless the Cd you are using is for the same version of XP as is included
with the original Dell software installation - XP Home SP2 or XP Pro SP2 in this case. If it had XP MCE on it, you must use the OEM XP MCE TWO CD set.
Otherwise, you have to use the Product Key for the regular CD, and that will probably cause you problems if you are already using that for another Windows installation.
You CAN use a regular XP Windows CD with the bios Setup set to SATA mode mode or similar, but the problem is you have to press F6 at the beginning of Setup, and then provide the proper SATA drivers on a floppy disk in a floppy drive! XP Setup at that point cannot recognize anything but drivers on a floppy disk - it will not look on a CD or a hard drive or a USB connected hard or flash drive - and it only recognizes a few USB connected floppy drive models, most of which are no longer being made (if you want to go that route, I came across a list of a few models that do work with it, but if you don't already have one they cost $40 or more to buy).