A little background, I had an older Dell XPS come in with problems locking up and rebooting. I eventually reinstalled Windows and then SP1 without issue. While installing the next update it rebooted on me, leaving nothing in the error logs about the reason, so I shut off automatic restart. I installed a lot more updates manually, installed all the software, started using Windows Update to install more. I didn't have another problem until there were just a few updates left, when it locked up. I cut power, turned it back on, came back a couple of minutes later and it was locked again with a black screen. That was the last issue I had with it.
I had run full hardware diagnostics several times and let Prime95 run for about an hour. Letting the Dell web page scan for drivers it found one video driver which it needed, but it was not the driver for the card which was installed, according to the Device Manager. That driver was in the list of "other drivers". I installed both, just in case, installing the one with the right model last. It was after this that I had the lockup issue and another scan on the Dell web site listed the same thing, so I again installed the one it said it needed and scanned again, when it said there were no drivers found and I had no other issues with it after that.
I still suspect it has some hardware issue, but I'll be damned if I can find it. At this point it's probably video card or motherboard. I was leaning toward video card at first since the hardware scan I did before reinstalling Windows had a lockup in the middle of the graphics test.
Anyway, after installing the video driver again and detecting no drivers needed I did not have another issue in over a day. I finished all the updates and software installs, got the customer data back and sent it home with him. He called and said his mouse didn't work, a check showed his keyboard also didn't work, but the power button worked. I had him bring it back in with the keyboard and mouse.
Now onto the actual issue. There are 3 USB ports on top of the unit. If the keyboard/mouse wireless transceiver is plugged into one of them, it detects fine, but neither keyboard nor mouse work. Plug it into a different one and the mouse works, but the keyboard doesn't. In the third, both work. I tried multiple times swapping ports, always with the same results. He had tried the front port, saying the mouse didn't work, but I didn't think to try that. The funny thing is my flash drive works fine in the port which causes both keyboard and mouse not to work.
I don't recall ever having a USB problem like this. Usually, barring a driver issue, there are 2 possible states: It works, it doesn't work. I've never seen anything like this before. And before he brought it in he had tried 3 different wireless mice in, I believe, 2 different ports (presumably the one nothing worked in and the front port which I didn't test). Any ideas here?
I had run full hardware diagnostics several times and let Prime95 run for about an hour. Letting the Dell web page scan for drivers it found one video driver which it needed, but it was not the driver for the card which was installed, according to the Device Manager. That driver was in the list of "other drivers". I installed both, just in case, installing the one with the right model last. It was after this that I had the lockup issue and another scan on the Dell web site listed the same thing, so I again installed the one it said it needed and scanned again, when it said there were no drivers found and I had no other issues with it after that.
I still suspect it has some hardware issue, but I'll be damned if I can find it. At this point it's probably video card or motherboard. I was leaning toward video card at first since the hardware scan I did before reinstalling Windows had a lockup in the middle of the graphics test.
Anyway, after installing the video driver again and detecting no drivers needed I did not have another issue in over a day. I finished all the updates and software installs, got the customer data back and sent it home with him. He called and said his mouse didn't work, a check showed his keyboard also didn't work, but the power button worked. I had him bring it back in with the keyboard and mouse.
Now onto the actual issue. There are 3 USB ports on top of the unit. If the keyboard/mouse wireless transceiver is plugged into one of them, it detects fine, but neither keyboard nor mouse work. Plug it into a different one and the mouse works, but the keyboard doesn't. In the third, both work. I tried multiple times swapping ports, always with the same results. He had tried the front port, saying the mouse didn't work, but I didn't think to try that. The funny thing is my flash drive works fine in the port which causes both keyboard and mouse not to work.
I don't recall ever having a USB problem like this. Usually, barring a driver issue, there are 2 possible states: It works, it doesn't work. I've never seen anything like this before. And before he brought it in he had tried 3 different wireless mice in, I believe, 2 different ports (presumably the one nothing worked in and the front port which I didn't test). Any ideas here?
