|The other day I used my computer for the usual things, email, post on forums, listen to music, etc. I turned the monitor off, and then came back a few hours later (I rarely shut my computer down). When I came back, this had suddenly started happening. Anytime I moved my mouse, the monitor would blink on and off for a while. It's not a steady blink, but rather on for half a second, then off for maybe a quarter second, then on for 1s, then off for 1/4s, then on for 1/4s, etc etc. This also happened if I tried to do anything, like, say, click on a button, or hit Ctrl-Alt-Del (or Ctrl-Shift-Esc), or right clicked, or pretty much anything. If I do manage to click on something, the system tries desperately to do something, but it seems to be hung up. One time I managed to get the Task Manager to appear, and I could see it was stuck at 100% CPU usage.|
Visually, the computer seems to have problems rendering some things. My background image loads ok, but buttons won't show up (they'll be blue lines), the information in the Task Manager won't show up (as in, I can't see any of the processes running, or their CPU and RAM usage), message boxes won't show up (there might be an outline visible, and maybe I can tell where the top bar is, but nothing useful like buttons or text).
When I start up the computer, it loads properly until it gets to the Windows Login screen. My icon and name are invisible (it's just a blue screen and my mouse), but if I hover over where my name SHOULD be, the mouse turns into the hand, and I can click and log in (I have no password, so it loads Windows immediately).
A couple years ago I got a PCI video card, and have been plugging into it since. I tried to switch back to my on-board through the system settings (F1 at startup), and set it to AGP/Onboard, and then plugged it into the onboard connection, but I must not have done it right, because it wouldn't send video through (my monitor just stayed blank, and the power light showed that nothing was connected, apparently). I set it back to PCI, and it came through again (but still the problems persist). So maybe first off someone can tell me if there's another setting I need to change to send video through the AGP Onboard card? I don't actually think it's a video card problem, but it could be.
So basically, this came out of nowhere, I have no idea why it would happen. My system is essentially unusable right now. I can't think of anywhere I would have gotten a virus (I haven't installed any new software in months, and I've restarted several times since then, and any torrents I've downloaded have just been music or TV shows). My computer is old, maybe the C drive has started to crap out? I did run a defrag on it a couple months ago, and it seemed to be ok.
HP Pavilion a620n pre-built
I think an Nvidia video card of some sort, supports Directx 9 (which I needed to play Portal, my onboard didn't support 9)...sorry I can't be more helpful, I'd check it in the System>Hardware window, but....
Monitor is a Samsung SyncMaster 793MB
Mouse is a cheap MS wireless mouse
Windows XP with SP2 (or 3? Whatever the latest SP is)
If you need clarification in order to help, please ask and I'll try to answer as best as I can. I know more than the average user about computers, but I'm not a guru or anything close, so your questions can be a little more technical and I should be able to understand them. Again, my system basically won't let me do anything, so once Windows has started I can't do anything like "check this setting, what does it say?".