|Go into the mboard's bios Setup and make sure the setting for Intialize Video First or Primary Video or similar is set to PCI-E or similar. If that's set to PCI, your video still works in Windows but the advanced PCI-E features the specific drivers support for the card load can't work properly. |
Your power supply has far more capacity than you need.
Hard drives don't draw much power.
Fans draw very little power.
You can often see that for yourself by reading the current or wattage rating on it's label, or by looking that up.
You probably have too many case fans running.
There is no point in having more case fans running than you need - the more you have running, the more mung (dust, lint. etc.) gets sucked into the case interior, which will accumulate on and fowl up your CPU fan and heatsink and your video card fan and heat sink faster, eventually causing the cpu and/or video chipset to overheat.
Open up the case and check the cpu fan / heatsink and your your video card fan /heatsink for whether they have accumlated too much mung (dust lint, etc.).
Also check for that on the case fans.
If it/they have too much mung on them, clean them off, but DO NOT use a vaccuum cleaner to do that (they produce a tremendous amount of static electricity when running, and anything connected to them can discharge that to your components) - use canned air, or an air nozzle if you have access to an air compressor, or an artist's brush that can be used in small spaces, etc. It may be difficult to clean the top of the heatsink under the cpu fan - the most likely place to have mung on it - and the bottom side of the cpu fan blades unless you remove the fan. Clean the case fans too if they have mung on them.
The rate of accumulation of mung can be very dependant on the location of the computer case and what's in the air the fans are sucking in. E.g. if it's on the floor or close to the floor in a room that has wall to wall carpet, the mung, much of it carpet lint, will accumulate a lot faster. It's best to locate it well above the floor in that situation.
If you have a mung accumlation problem, then also check the power supply - it probably has mung that should be blown out of it too.
If additional case fans running don't further reduce the temp inside the computer case, they aren't needed.
E.g. disconnect the power to all case fans, except for, say, two. Use the computer for a while, then note the temp inside the case reported in the mboard's bios. Connect one more case fan, repeat. When you reach a point where having more case fans running does not reduce the temp, those extra fans are not needed.
AMD proved in tests that the most effective place to install case fans is at the back of the case as high up as you can mount them, blowing the air OUT of the case. The side of the fan where you can see the entire fan blade, no support ribs in the way, is the IN side of the fan's air flow.