Memory problem

[sue]

Hi to all,
I hope someone can help?This problem is fairly in depth and i'm a novice so please bare with me......I have windowsxp professional installed and a few weeks ago when i started up my computer the mouse wouldn't work,so thinking it had run it's life i purchased a new one,but same problem occurred again.That same day when i tried to print i received a message saying the computer couldn't communicate with the printer and that a cable must be unplugged.Then it happened again with my ISDN connection and the scanner.
I took my computer to a repair person who replaced the motherboard and connected four new usb ports.Still the problem remains with a blue screen for about 3 minutes after windows loads then a box appears asking what i want windows to do i.e.start up or shut down.Same when i turn off.Now when i finally get my system working i have to unplug my mouse and plug it in again to get it to work,same with the printer but my computer refuses to work if the scanner is plugged in.
I hope someone can help,
thankyou.

[Rob]

Sue, How long have you had the computer? Are you currently running anti-virus, with current definitions, and anti-spyware tools? If either or both are no, I would first go to the following url http://housecall.trendmicro.com/

Housecall will allow you to remotely scan your computer for virues for free. It might take a while so plan this when you have time.

After that, download Spybot Search and Destroy. Go to this page, about the middle and download and run this. http://www.pcworld.com/downloads/fil...d,22262,00.asp

Let us know your results.

[Alan]

I would try Rob's suggestions first, then put your Windows disc into your CD Rom drive, press the Windows key and R (at the same time) then type sfc /scannow this will check your system files.