[QUOTE=rolandc5;2295914]i dont really know what kind of motherboard it is but my video card right now is showing funny stuff and when i play left 4 dead it crashes and restarts computer.[/QUOTE]
This doesn’t strike me as the kind of problem you’d get with an underpowered graphics card.
While the current integrated ATI/AMD graphics solutions apparantly run fairly cool, I’m not sure how much heat the xpress 200 generates. Check that all fans in the system are running, especially if there is one on the motherboard (apart from the one attached to the processor).
If the integrated graphics has developed a fault however, It wouldn’t exactly be unlikely that other motherboard functionality has started failing.
The IGP (integrated graphics) uses the system memory. It might be that the memory has gone bad. Unfortunately, I doubt memory testing software (like memtest86+) can test the part of the memory that is allocated by the IGP. Before spending money on a new graphics card, see if you can borrow one (it doesn’t have to be powerful) to see if it solves the problem, and also download and run memtest86+ (it’s free).
You say that the system is four years old. While we don’t have emachines here, I understand that they have a reputation for poor quality. If the power supply they included was barely sufficient to power the machine under load (like when you play a game) when new, it could certainly have degraded enough by now that it can no longer manage it. A quality power supply doesn’t cost that much, you’d need it anyway if you get a faster graphics card, and you’d save money on electricity in the long run. 350W or so is probably plenty for what you have now + a lowend to midrange graphics card, add a bit more if you intend to get a faster card (which would be a waste with the rest of your current computer) or if you plan to use it in a future build. Unfortunately, most cheap powersupplies are junk, but a few examples of brands that you’d typically expect quality from are Seasonic, Channel well, Antec and Corsair