Until recently, my computer ran Windows XP, and had about 100 GB of memory. When I played Team Fortress 2 and Garry's Mod, it ran very smoothly. I mean, a lot. Very little lag and next to no major lockups. Then a virus ravaged my computer and deleted some vital system files, preventing me from booting up my computer. I took that as a sign that I should upgrade my hardware and software. So I got a copy of Windows 7, a new network card and a 1 TB hard drive. My network's wireless router was also replaced; people stepped on it too many times. I had, and still have, 2 GB of RAM. Somehow, that doesn't sound like it'd be enough to me...
After the update, I hooked up my old, 100 GB hard drive and ran a virus scan on it and successfully removed the bug. After, I installed all of my games again. Now, my computer lags a lot and runs slowly, even when playing a local, not-online game, like Garry's Mod. Textures are also really wigging out, with many effects being distorted and blocky, especially light effects. Textures have also been switched around among some of the models; for example, the class selection screen in TF2 usually has a blank background, but, after playing a game for a while, the background becomes replaced with random fragments of achievement icons, usually "Dropped Dead", "Triple Prey", "Shoot the Breeze" and "Semper Fry".
This next problem, essentially, renders TF2 unplayable: it won't register my shots. For example, sometimes, as a Pyro, I hold down the shoot button, but my Flamethrower won't fire. And, when I press it and it DOES shoot, it won't stop, even when I release the button.
My question to you is this: How do I fix this? Please note that I know very little about computers, and whatever help you can offer would be awesome.
After the update, I hooked up my old, 100 GB hard drive and ran a virus scan on it and successfully removed the bug. After, I installed all of my games again. Now, my computer lags a lot and runs slowly, even when playing a local, not-online game, like Garry's Mod. Textures are also really wigging out, with many effects being distorted and blocky, especially light effects. Textures have also been switched around among some of the models; for example, the class selection screen in TF2 usually has a blank background, but, after playing a game for a while, the background becomes replaced with random fragments of achievement icons, usually "Dropped Dead", "Triple Prey", "Shoot the Breeze" and "Semper Fry".
This next problem, essentially, renders TF2 unplayable: it won't register my shots. For example, sometimes, as a Pyro, I hold down the shoot button, but my Flamethrower won't fire. And, when I press it and it DOES shoot, it won't stop, even when I release the button.
My question to you is this: How do I fix this? Please note that I know very little about computers, and whatever help you can offer would be awesome.
