|"my Mobo model is Inte.D845WN"|
These must be installed, or must have been installed:
Main chipset "drivers"........
INF Update Utility - Primarily for Intel® 800 Series Chipsets
If you're not sure whether they've been loaded, it does no harm to load them again, even if they've already been loaded.
You computer WILL load Windows slower and run Windows slower if this hasn't been installed......
Performance Software - Intel® Application Accelerator
"This utility updates Windows...to reduce the storage sub-system bottleneck - enabling faster delivery of data from the hard drive to the processor and other system level hardware."
If the Intel® Application Accelerator has been installed, it appears in the All Programs list. If you access it, it shows you the mode your hard drive(s) and optical drive(s) are running in.
For modern (made after about 1998) hard drives the mode shown should be Ultra DMA mode 4 or higher.
For CD or DVD drives, the mode should be shown be at least Multiword DMA 2 mode.
Combo DVD burner drivers (read and burn both CDs and DVDs) that are rated to burn DVD-R or DVD+R disks at 16X or higher should be in Ultra DMA mode 4
If any of those are set to PIO mode, try setting them to a higher mode in the Intel® Application Accelerator.
If it won't go into a higher mode, that indicates Windows has made one or more lines in the Registry to force the drive to run in PIO mode because it was detected as producing too many data errors. That / those lines can be removed and the drive will then run in a higher mode, but only if whatever the problem was that caused the data errors has been fixed - e.g.you may need to re-seat or replace a data cable.
IDE hard drives that are capable of running in UMDA 66 mode (Ultra DMA mode 4 in Windows) or higher must be connected to an 80 wire data cable in order to be able to run at their max speed. Combo DVD burner drivers (read and burn both CDs and DVDs) that are rated to burn DVD-R or DVD+R disks at 16X or higher must be connected to an 80 wire data cable.
You list 512mb of ram. If you're using onboard video - video built into the mboard - it should be set to use no more than 128mb of the ram installed in the mboard in the bios Setup.
If it's been a while since you last loaded Windows from scratch, lots of things can cause Windows to load slower.
As already mentioned above, have you done a FULL scan of your system with any anti-malware software you have installed lately ?
If you don't already have it, I / we recommend you download, install, and run a Full scan with the free version of Malwarebytes. If you already have that, click on the Update tab in it to update it, and run a Full scan again.
If there is not enough free space on the partition Windows is running from, which is usually C, Windows will load slower and run slower than it otherwise would..
What is the size of the C partition ? How much free space is left on it ?
One of the most common reasons Windows loads slow is you have too many things loading as Startup programs. Usually you do not need to have most of those programs loading.
See response 4 in this: