QUOTE(Thomas Kaira @ Mar 14 2011, 02:16 PM)

A power supply will also degenerate over time and provide less power. If your power supply is 3 years old, for example, it may only be capable of providing 380 Watts (rough estimate).
My computer is equipped with a 1000 Watt supply to keep this from being a problem. If you do need to get a new GPU, I would also suggest upgrading to something around a 600 Watt PSU. That doesn't require a whole new PC, you just need to unplug and replug everything the PSU is providing for.
However, there is one outlying question I need answered: Is your motherboard PCI-Express 2.0 compliant? If not, then you are really looking at a new PC. You cannot buy a decent GPU without PCI-E 2.0 compliancy nowadays. *looks it up* I just looked it up, and the 8600GT is only PCI-E 1.0 compatible. Do make sure you have 2.0 available, because a MoBo upgrade is equivalent to a full system upgrade.
I don't know how to find out, device manager? Anyway, it is in the shop now. Canned message below:
Just got back from the Geek Squad, had to leave it at the shop $255. just to diagnose the problem and sell me an external hard drive to copy files to so they don't lose them. (however, I have to sign a waiver saying if they lose my files I am USCWAP.
Then I bought a laptop, thinking they would nicely give me a copy of my documents so I'd have something to do while they have my pc - that was a fail.
So right now I am on my HUNDRED YEAR OLD HP that I had to keep reformating every couple days. The monitor is round, the pc is very slow. The mouse doesn't have a wheel on it. I can't read anything on this monitor. Too tired to set up the laptop yet.
I'm going to eat something and will get back on here later.
@ Rick -
QUOTE(mALX @ Mar 14 2011, 09:58 AM)

When I said my power supply I added was massive - I meant big looking and heavy to carry, not powerful.
I have only a 400W power supply. GAAAAH. I'm going to bring it to the Geek Squad and if they won't fix it I may need to get another PC tower. (hopefully something that will be compatable with the POS HP monitor - and the printer (which I actually like except it goes through cartriges like a termite on Skooma. It's called the "all-in-one because it uses all of the cartridge up in one printing session).
Uh, if it is the graphics card I may have a problem. TK said the mobo may be a POS that doesn't take good graphics cards - well, it is an HP, so I would almost bet it won't take the great ones. I think they were sqeezing all the life out of the [censored]er when they sold me the NVidia GForce 8600 GT and installed it - I did tell the guy when I bought it that I wanted to be able to play OBLIVION on it. Gaaah.
So now the SAME STORE just talked me into a laptop that is supposed to be able to play Oblivion, Fallout 3, and SKYRIM (did you know the requirements list is out? I have a copy of it!!) - It is an Asus
G73S - now that I am home and not being pressurized by the salesman I plan to look it up and see how much I was taken in this time. It does say "Republic of Gamers" on it, that is what sold me really - the salesman could have been a talking squirrel after that.
This post has been edited by mALX: Mar 14 2011, 11:26 PM