Satellite U400 - 13K PSU45E Windows XP & 4 GB RAM

Hello!

I have a Satellite Pro U400 - 13K (model: PSU45E-00800DGE), with 4 GB of installed RAM (800 MHz). I used to work with Windows Vista Business SP1 32-bit, which was the pre-installed operating system, and I could see all the 4 GB of RAM in the properties of "My Computer".

Last a few days and aftert 2 years of work with Windows Vista, I decided to downgrade in Windows XP Professional 32-bit, as I faced incredible problems with performance. Even though I had very low temperature on my proceccor carrots and only 4-5 open applications (Ms Outlook, IE, Adobe Creative Suite CS3 and a little more), I looked at my phone to freeze for about half a minute and still to come! I have spent many months trying to figure out what's wrong, I changed the machine, I reinstalled the system several times, but when there was a big load, that happened more and more often. So after reading a few posts on several forums, I realized that Windows XP need fewer physical resources for the same things and I decided to downgrade. It is only a few decades in time, but if I can work faster, that's OK.

Thus, we come to the question! After a successful installation of Windows XP Professional 32-bit, using the official, given restore disc with the laptop (it came with two operating systems of two bilingual English & Greek), I realized how fast he could be with Windows XP Professional 32-bit! I could ' t believe that...! Why I was using my laptop with Vista, all these years, I have no idea! The problem is with the memory, like that cannot recognize the 4 GB of RAM, even if they have installed SP3 and all updates provided Microsoft Windows. I'm sure that Windows XP Pro 32 bit can 'see' the 4 GB of RAM, as I had 4 GB of RAM with Windows XP on a desktop computer, I have no more.

I also tried the/3 GB and the/PAE boot.ini spends some time, but nothing else. The problem is that I do not remember what I have on my desk, or how that has memory, but I don't know that I had 4 GB of RAM in the 'Properties' window I searched on the net also to find a solution, but I couldn't find the boot.ini file switches and parameters of the BIOS, which is not based in the settings of the BIOS of TOSHIBA laptops.

Is a solution provided by some user/technician exprerienced, about this Windows bug?

Thank you very much in advance for your kind cooperation.

Angelos Pitsos

I've never tried XP with up to 4 GB of RAM to be honest, anything over 2 GB should be more than enough.
32-bit operating systems can only address a total of 4 GB of RAM, why you can't access all this RAM is because the address space is also used for the system resources such as network cards, scsi controllers and graphics cards etc.

Richard S.

Tags: Toshiba

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