The problem is, basically, that my computer runs games much worse than it should. Here's all the specs I know:
ECS Asterope RC410 Motherboard
Pentium D 2.8GHz (previously Pentium 4 3GHz)
2GB DDR2 RAM (previously 1GB)
GeForce 8600GT 512MB DDR2 (previously integrated)
300W PSU with 19A on the +12V rail
80GB and 160GB SATA HDDs (previously one 160GB)
The computer was an HP Pavilion a1355a which was given to us with a clean install of Windows XP. The original specs are in the brackets.
I've played games like Call of Duty 4, Modern Warfare 2 & 3, Crysis, Crysis 2, Counter-Strike: Source, and Half-Life 2. I've done research and found out how these games should run with my specs. Here's how they should play compared to how they play on my computer:
Normal, max settings: 200-300FPS
Me, max settings: 25-60FPS
Counter-Strike: Source, Max Settings
Normal, max settings: 100FPS
Me, max settings: 15-40FPS
Call of Duty 4
Normal, max settings: 60-100FPS
Me, 800x600, low settings: 25-60FPS
Normal, medium settings: 30FPS
Me, 800x600, low settings: 20-40FPS
Note: Source games (Half-Life 2 and Counter-Strike: Source) don't like my computer, and lowering graphics settings does almost nothing for performance.
These are approximations from what I can remember, but they're close enough. I've done evewrything I can possibly think of to speed up my computer... CCleaner, defragging, virus and malware scans, Game Booster, upgrading components (I borrowed a much better 400W PSU one time as well), searching all over Google, trying different video card and motherboard and bios drivers. The only thing left that I can think of is the motherboard, and I did buy one once, but it didn't actually work, and I'm only 17 and don't have much money so I don't want to buy another one.
I'm sorry if this post is a bit long, but I'm just so fed up with my computer. I'd really appreciate any help.
Edited by Darx, 13 September 2012 - 07:50 PM.