About 7 years ago I LOST everything on my PC when the part on the motherboard that controls the mouse died. Now my second computer, about 5 years old, is displaying some of the same symptoms. I have tried both a mouse using the PS2 port and one using an USB port. Both mice (in fact I have tried four of them) have the same symptoms - working sometimes and if bounced around will usually start working until the mouse dies completely. I then have to turn the computer off with the off/on switch and the same thing happens again and again and...... This computer has Windows XP Pro and all the necessary antiviruses etc. At this moment I am doing a complete back-up because I don't trust it. Any ideas what might be wrong? Is there any hope? OldGrayMaryIt SOUNDS like the problem could be one of TWO things:

1) The is a hardware problem on the motherboard that is preventing the mouse to work properly, or

2) The most likely problem is that there is OS corruption since the mice will work intermittently and then stop until the computer is restarted. This problem is usually caused by a missing Windows file and/or the result of a virus or other malware. Because of the symptoms you are presenting, I would suggest the latter. It seems like the mouse will work until a certain PROCESS starts, resulting in cessation of mouse activity.

In order to resolve this situation, I would suggest backing up all of your data on the computer if possible and then reformatting the hard drive and installing the operating system. If that does not resolve the problem, then there is a hardware problem on the motherboard, which means it will have to be replaced.Does it do the same thing in Safe Mode?Quote from: OldGrayMary on October 03, 2009, 08:59:09 PM

I then have to turn the computer off with the off/on switch and the same thing happens again and again and......