My decent computer started being laggy??

Hewlett-packard Pavilion a6210z desktop...
December 11, 2009 at 13:35:06
Specs: Windows 7 - 64bit
When i turned my computer on it was kind of laggy.. like when i hover over things it will take a few seconds to switch between, like the taskbar icons in tray, and drop down menus drop down slowly..the only thing i did was install another case fan to blow air in lol.....I even unhooked it and it was messed up... It lags all the way frm startup, ( i have windows 7 64bit) and the startup animation lags...and when i minimize windows and stuff it lags, as well as youtube videos..... So i wouldn't think there was something weird wrong except.. My pc specs are as follows.. (and plus it has been fine until today...)

Brand new ASUS Motherboard (bios v.0503 (updated to try to fix, nothing though)
Brand new AMD Phenom II X4 3.4GHz
4GB DDr2 800MHz Ram
4 month old 1GB DDR2 Nvidia Geforce 9500 GT
Windows 7 64 Bit Ultimate edition
Brand New 460 Watt Power supply...

And again it was fine last night and before then.. SO any help would be nice..........Thanks...

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December 11, 2009 at 14:10:39
It is possible that for some reason the process of installing the fan caused the BIOS to go back to "fail safe" settings. Boot the system up into the BIOS, and there should be an option to load defaults or load optimal settings, or something like that.

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December 11, 2009 at 14:18:55
Uhhh, that didn't make it better =\.. but um, one thing that has showed up ever since i isntalled mobo/cpu, is it says that the cpu is not supported by the motherboard, (or something like that) and press F1 to continue, and it boots windows.. but it worked for like 3 days before with this error.. (havent been able to figure out why this shows up, when mobo says it clearly supports my cpu)...Thanks for your help so far.

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December 11, 2009 at 14:48:12
EDIT: Just saw your post, which renders most of my advice

Here are some far out ideas:

-Did you accidentally bash your hand against any component when you were hooking up the case fan? Particularly the CPU cooler or any expansion card? If you did, you might wanna reseat the cooler or expansion card. Poorly seated cards can cause a computer to behave strangely.

-Do you have a card reader? If so, try unplugging the reader from the motherboard. I once had an internal card reader that completely clogged up my system. The reader was fine for several months, but then one day when I fired up the machine, Windows took a good five minutes to reach the welcome screen and another five to get to the desktop. It took me forever and a day to find out that the card reader was the culprit. After finally unplugging the reader from the board, Windows booted in a flash. Nearly bald from all of the troubleshooting, I went to the store, bought a new reader, and haven't had any problems since.

-Hard drives and optical drives--are they in DMA mode? This is usually not a problem with SATA drives, but worth a check.

-Memtest your memory.

-In the BIOS: CPU cache enabled? Is all memory recognized and at the right speed?

-All internal power cables plugged in?

Socket 939|Dual-Core Opteron 185 @ 3.2GHz|A8N32-SLI Deluxe|4GB CL2 PC3200|SLI 8800GTS|1TB|PCIe X-Fi Titanium Pro|Win7 Ultimate x64

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December 11, 2009 at 15:13:52
As far as i see, yeah, Cache is enabled. and none of the other things fixed it..This is so annoying..

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December 11, 2009 at 16:54:35
Your specs are incomplete. No motherboard model is listed & all you stated about the PSU is that it's 460W, that's pretty much useless. Although it wouldn't make a huge difference in performance, the Phenom is designed to be run with DDR2-1066 RAM. And the 9500GT with DDR2 memory is a weak card, not very suitable for gaming.

Reseting the BIOS to the fail-safe defaults was a bad move. Any performance tweaks that you may have had are now gone. Post the exact model of your board & your memory & I'll recommend some settings to try. BTW, why did you post your system as an HP A6210z?

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December 11, 2009 at 17:06:17
Oh, i listed it as that, cuz that's what it originally was, but completely rebuilt, thought u had to put a type in, so i just put what it was.

ALso, i had never made any tweaks in the bios settings because i don't really know what im doing in there so i don't want to mess something up...

Brand new Asus M4A785-M Motherboard (bios v.0503 (updated to try to fix, nothing though)
Brand new AMD Phenom II X4 3.4GHz
Corsair XMS2 4GB PC6400 DDR2 800MHz Memory Upgrade - 2x2048MB
4 month old 1GB DDR2 Nvidia Geforce 9500 GT
Windows 7 64 Bit Ultimate edition
Brand New Cooler Master Elite Series 460W Power Supply

There's more detailed specs. And as far as graphics card, yeah, i know. but my computer is lagging from very beginning of windows startup (from first logo screen and beyond) But really what lags is the fade effects and stuff, like trillian notifications/drop down menus/facebook updates/taskbar notifications. The speed is pretty much as fast as it should be, programs open quickly, and everything loads fast, (even startup)..

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